I'm wondering why you're fretting over something that is yet to be or may never be. No one can predict the future so it's futile to waste engery projecting what the future may hold. The only thing you can do is focus on what's happening in your life today.
I've seen many of the posts you've described above and based on those posts, it's fair to say that the outcome of sobriety depends on the individual. There's no telling which direction your AH may take when or if he reaches sobriety. You can try to hypothesize how he may behave based on his current behavior, but since he's still an active alcoholic it would be impossible to project what choices he might make once he's no longer under the influence of alcohol and can think clearly and behave responsibly.
The best thing we can do for ourselves is to live for today and continue to work towards our recovery so that whatever life throws us in the future we're healthy enough to make the right choices.