Thanks for sharing your story. I think the answer is yes to all of your questions. But his usage is severe.
I am not an expert so I can't possibly know, but I think that if he gets help, gets clean, and gets treatment for whatever underlying condition he has been using adderall to cope with, he will eventually heal -- I sincerely hope with all my being that that is what happens. It sounds cliche, but he has to admit to himself that he has a problem before that healing can begin.
The fact that he admitted this is definitely a ray of hope in your story, and is at least a little bit encouraging.