Well if we take the sugar coating off.
- No, there is no reason for you to turn down the glass of wine if you wanted it, you are not your AHs keeper.
- He saw an opportunity and jumped all over it and drank 4 beers in an hour, that's a lot of beer in an hour! You are probably used to those amounts having lived with an alcoholic for so long but regular drinkers don't drink like that, nothing "moderate" about that.
- Your Mom was there so perhaps he didn't want to continue drinking and look bad?
- He said he is quitting, doesn't want to drink anymore but that's just not true, not at all, he hasn't quit and he does want to drink.
- Anyone, alcoholics included, can moderate drinking when it's required, sometimes it's probably even preferable, 4 beers, fast buzz, then just sit with that for a while. Doesn't mean anything in the long term.
Sorry you had such a horrible day.