It seems that in the long term it would be better to have an account he can't access, which caters to all family expenses like bills, rent and of course an emergency fund. Your AH has no right to spend money that's required for day-to-day, and if you discussed this with him he would probably agree. He'd also have a right to discretionary spending (as do you), so at some point he's going to have to face the prospect of whether he buys alcohol. He can't go without access to money forever.
It would pay in the long run to sit down with him any try and structure your finances so he can't sabotage them.
I know you don't want him to start drinking again, but I'm not sure whether you're more worried about this or him raiding family funds. I think avoiding the problem before Christmas is probably the wisest thing to do.