Just before you posted, I was thinking the same thing. He is losing his sense of powerlessness, and finding his rage at the "outside" forces that tripped him up to be more important. This doesn't bode well for him. I wish him well, but he indeed sounds like someone who now thinks he has it under enough control to use again. But everyone is different, I don't want to predict failure, just am sad that there seems to be a path to it that he's ready to walk.
Funny how the language alone can reveal the way one is drfiting from the path. I have an employee who is a recovering alcoholic. He had some jail time because he couldn't stay out of a car, so I am familiar with what you are describing.
I also recognize the changes in Rush's language that cause a scare that he may be relapsing. One thing we hate to hear is when he starts talking like he was just an unfortunate victim....to have been caught or the victim of an unjustified witch hunt.
I want to hear him say how he set himself up for the fall and not blame others.