Darkplace,
Happy to hear he agrees to go to rehab, maybe while there some doors will open and he can find some help for his other issues.
I was always a deep sleeper too. My oldest AS, when he was a teen, use to walk out of the house in the middle of the night and I never heard him....(I guess he was stealthy...
)
Hugs to you, and prayers for you, and your son....