Rush has always been a "they just don't have enought willpower" kind of guy when it came to addiction. I would like to think that this experience has opened his mind. On the other hand, deconstruction of one's own ego is the key to recovery. I have a hard time envisioning Rush as someone who can honestly do this.
Since I don't know him personally, I will have to listen to his show and come to my own conclusion.
I will, of course, pray for him to accept his Higher Power's will for him and pray for his continued recovery.