I'm very convinced this is what happened.
Lovell got Arrested for possessing Marijuana.
When he got bailed out by Logan, Weeks to months later, his Marijuana addiction started to kick in again, and during the production of an SML Movie one day that Anthony and Elaina were apart of, he tried asking them about drugs, and since they refused, Lovell attacked them and verbally abused Elaina not knowing he was doing something wrong. Then, he also wrongfully pressured Logan into kicking Anthony out of the SML Crew for not getting him drugs. He felt bad about it and pledged to stop with his Marijuana addiction and his outbursts and bossiness. But, he couldn't help it. Not that long after, he got a phone call, him again thinking that it might be from a person who might be able to get him drugs, but no, It was GameCubeDude. He had given a voice call to Lovell about if he wanted to be on the Opinionated podcast. Lovell was disapointed that it wasn't about drugs. He thought for a bit about what to say, and when he realized that he had a Funeral to go to with his family, he told him that he couldn't for the time being. GameCubeDude was okay with this, and Lovell ended the call, dissapointed he couldn't get drugs.
Weeks later after the Funeral, around the end of may, GameCubeDude tried contacting Lovell again, no answer.
Lovell was starting to not act himself, and Logan got worried. Was his bad behaviour starting to show up again? He wasn't sure.
However, he was silent for about almost another month. Then, GameCubeDude was able to get his attention on phone finally. he was upset that Lovell almost waited untill last minute to let him know if he was finally available to be on the Opinionated Podcast. Lovell got scared, he could almost have gotten in trouble and needed to tell the truth of why. However, his fear led him to lie that he couldn't make it due to the Funeral a month and a half ago.
Sadly, this made GameCubeDude furious. How could Lovell, a supposed friend his from the SML Crew, promise to be on the podcast when available, and then not communicate about it until he lied at last minute? He was dissapointed. What could Lovell do to fix this? Lovell then got panicky, having a realization that he was being ackward on phone and ignoring GameCubeDude's calls because he was expecting a guy to deliver drugs to him. He got scared and tried ever scapegoat he can out of fear. This just made GameCube madder. He was not expecting Lovell to refuse to tell the truth. and that just made Lovell snap. He then cut off the call before he answered, and Started furiously watching his videos, wondering if he could get him to buy drugs.
However, it was not possible. he was clean. He had to do something.
That was when Lovell started to get sick of not getting drugs due to his Marijuana addiction.
Around the beginning of July, his friend, founder of SuperMarioLogan, Logan Thirtyacre was hit by some sizable Youtube Drama for the first time in his life. He had been attacked by a smaller YouTube channel claiming they created jeffy beforehand, not knowing of previous YouTube Channels with Jeffy characters. When Lovell found out about this, he had an epiphany. What if GameCubeDude called him again? What if he tried to let GameCubeDude apologize for the situation and pretend he's apologizing too? There's no way it could fail! He talked to Logan about doing this with him.
He made sure Logan tried talking to him. Surely enough, due to GameCubeDude being sick of Lovell's charades, he wouldn't believe him.
And then, GameCubeDude had enough! If Lovell didn't clean up his act and decide whether he wanted to be on the podcast or not, he'd delete his channel GameCubeDude300 since this just added too much to his stress about the SML Community entirely.
Having heard the whole conversation, Lovell got mad. He thought he needed to punish GameCubeDude for not giving him what he wanted, which was drugs. Logan, being the smart one, refused his unokay request, and attempted to ask GameCubeDude his thoughts on how to revive GameCubeDude300.
Lovell got fustrated. He was sick and tired of not fulfiling his addiction. So, he decided to furiously yell at logan to talk to him, thus beginning to scare Logan. He then started bugging Logan about shutting down GameCubeDude300 since GameCubeDude didn't get him marijuana. This bothered Logan, and Lovell refused to stop.
And, then, since Logan too scared that Lovell would hurt him verbally, asked out of pressure to have GameCubeDude300 Shut down. GameCubeDude didn't want hear about what Lovell wanted to hear instead of the truth and got confused since Lgan was usually a great dude.
This was the first strike. Days later, out of stress, GameCubeDude decided he had enough of the drama and controversy surrounding the SML Community, and he announced and decided to shut down GameCubeDude300 out of pressure that Lovell would defame his YouTube reputation.
When Logan went to check out how things were going on YouTube surrounding all the drama he recieved over the while and how the fan channels about SuperMarioLogan was doing, he realized something abnormal, GameCubeDude300 was gone.
That was when he had a suspicion Lovell may have caused a takedown of his channel. So, Logan went to chat with Lovell about what happened, interrogating him about everything since he really doesn't like Drama about his channel at all.
Lovell attempted to explain everything, and Logan warned him not to cause another huge problem like that again and that he'd be calling GameCubeDude to find a way to fix the situation and to get GameCubeDude300 back.
He had to tell his fanbase the truth about all the drama, although he didn't like getting into drama normaly. So, he asked his girlfriend Chilly baout making a Logan vlog about it and the following saturday of the beginning of July, Logan mostly spilled the beans. Except, for Lovell. He didn't want to tell the truth about Lovell's situation in the past months! Why would he? He voices so much Popular main SuperMarioLogan Characters that it's crazy, and he'd be panicking if him telling the truth would cause Lovell to leave the SML Crew forever.
So he decided to think things through.
So. After a few days of thinking about the situation, Logan decided to call GameCubeDude about getting his channel back, trying once the week after. But, when Logan was first able to try fixing things, Lovell overheard Logan talking to him on the phone, and Lovell butted in, asking if he could talk to GameCubeDude, thinking his drama was gone after getting GameCubeDude to shut down GameCubeDude300.
This was a bane, but Logan attempted to ignore Lovell, since he wanted the best situation with GameCubeDude300, and Lovell had another breakout. He had to put his footdown on what was what,since he was tired of not getting what he wanted. So, when Logan finally got his attention, Lovell started pressuring GameCubeDude not to listen to Logan, and it scared logan into ending the call abruptly.
Having seen Lovell's behaviour repeated, Logan and Lovell had a long hard talk about what went down during the phone call, and how he was dissapointed that Lovell tried sabotaging a chance to mend and fix bridges with GameCubeDude. He then firmly gave Lovell a final warning, and that if something like that happened again, that Lovell would need to spill the beans.
Finally, Lovell agreed out of pressure and it felt like things were going back to normal for a few weeks.
Starting the week after the drama, one day, Lovell went onto his YouTube channel, SMLLovellTV, hoping everything would be okay and that he could make a new reaction video without problems. But, when he went to his channel's comments section, many people confused and angry were mad at him for his behaviour, but some were being rational about what they thought about Lovell's actions and what they felt Lovell could do to redeem himself, like me.
So, after having seen enough, Lovell felt and decided to take a break hoping it would die down. But since it continued, the break extended, with him feeling guilty for his marijuana addiction causing many casualties.
During Lovell's break the week of it's beginning, Logan was finally able to call GameCubeDude and discuss how he could get GameCubeDude300 back. It was a great conversation, with Logan admiting the truth about things, and hoping that GameCubeDude could get back on his feet, and they even tried getting GameCubeDude300 back, but it didn't work. GameCubeDude then proposed rereleasing some of his SML Reactions and his other non-SML Reactions onto GameCubeDude200 and doing new non-SML Reactions, asking Logan if he could at least do a reaction to the SuperMarioLogan Movie with Logan agreeing to it and the phone call ended.
Then, around a few days later, a week passed, and then July 13, GameCubeDude released an Update video to his update about why he Shut down GameCubeDude300, explaining how him and Logan made up and became friends again.
It was not untill 3 bad SML Videos released that something was wrong with Lovell. Why was it that every single time he lashed out because of no drugs, or was depressed, bad videos were made? Logan had to investigate, and on the week of July 27th, he came to Lovell, asking him about everything he learned and if it was all true. Lovell, having finally felt it was the time to explain, revealed the repeating outbursts, breakouts, and continued drug addiction that came back to bite him in the butt for months after his marijuana was taken away and caused him to be in Jail. Logan then wondered why and Lovell explained it all.
Lastly, it was almost the end of the month, and Logan still hadn't released the SuperMarioLogan Movie. He was worried that some of his fans would be impatient for the Movie, and Logan felt that the only way to get the fun loving old lovell who was kind to others back was to talk to his other friends and especially his girlfriend Chilly about potentially sending him to rehab to help heal Lovell of his drug addiction to get the old Lovell back. His friends and Chilly agreed, having felt that things have gotten stressful behind the scenes with Lovell causing all his outbursts and breakouts due to his drug addiction.
So, Logan, having decided Lovell needed to be rehabilitated for his greater good, decided to let Lovell know of his plans and that he was going to contact authorities so that he can take Lovell to a rehabilitation center in a righteous attempt to rid him of his addiction and bring back the good-natured Fun loving Lovell back. Lovell, feeling scared and thought was the best thing for him went through with it, and Logan brought him to a rehabilitation center, explained his situation, and was told Lovell needed to be there for a month, worrying him that he would accidentally break a promise about The SuperMarioLogan Movie.
In a panic, Logan decided to talk to Chilly about doing an Emergency Logan vlog the same weekend of Lovell being sent to rehab, and..... on July 30th, released the Emergency Logan vlog on his girlfriend's vlog channel explaining everything about the state of the SML Movie and why it won't be out untill the end of august, being cautious and vaugely explaininh that it was because Lovell went to get some help. But in the end wanted us SML Fans, to pray for the best of him, while asking what he should do with the SuperMarioLogan Movie. So far, it seems that we've all spoken and have gotten Logan to decide to put off finishing and releasing the SuperMarioLogan Movie untill when Lovell finally leaves rehab a changed man, hopefully, This being a good thing since Lovell's characters are a huge part of SML.
So for all these events, and all that happened. This is why I think Lovell is getting help, and explains why it is most likely that Lovell went to rehab to clean himself of his Marijuana addicition so that he could be his good-old natured self again.
TL;DR : Lovell losing his marijuana and going to jail while getting bailed out took a toll on him and caused his Addiction to take over his mind and caused several problems that caused several casualties which led to Logan and his friends deciding to have Logan take Lovell to rehab it seems for a month to help heal Lovell of his addiction for good and bring his good old self back so that Lovell never causes troubles again, because it's not like Lovell to be rude!