My X still thinks I cheated on him (which I did not). I have come to the realization that is b/c he is such a cheater that he thinks I MUST have cheated on him too. Quack, whatever. I don't engage in that sort of crap.
I too hope he is going to be gone for the holidays for your peace. I know when my X was in rehab I felt much more at ease b/c I knew he was safe and not drinking.