(((Emmy))) - yes, people DO change (I'm living proof) BUT I would wait to see actions, rather than trust his words.
I was great at telling people what I thought they wanted to hear when I was using. It wasn't until I hit rock bottom and ACTED like a recovering addict. I had a job, I paid bills, I was where I said I'd be at any given time.
You don't owe him another chance. If anything, HE needs to put actions behind his words.
Personally, I would let him go to his own therapy meeting. If you need therapy, get your own therapist. Let him SHOW he's committed to recovery and stand back while he does this.
If he needs anyone to get into recovery, it's other RA's and possibly a therapist who is familiar with addiction.
He's a big boy...I say let him walk the walk, instead of talking the talk.
Hugs and prayers,
Amy