Originally Posted by
Doberfiend 
...On the other hand, if he's taking steps to at least get his addiction treated, I want to encourage that progress.
There is something here about the three C's: I didn't Cause it. I can't Cure it. I can't Control it. That probably means you can't encourage his recovery either. It's all on him. ALL.
I vote no contact. His actions will prove soon enough where his mind is regarding his addiction.