Yes, I've seen that in my STXAH too over the years. He usually gets back to the way he was for a short time after a DUI, and accident, or when he gets into other trouble. Like cyclelady said, it is the "OH CRAP" stage and they get scared that things are changing and they won't be able to keep their addiction going. They lure you in and then when they think things are back the way they want them - little by little they change back to Mr. Hyde. It's what alcoholics do so they can continue in their addiction.