Hi BobbyJ,
You sound in your post, fractious! Remember in all this to look after yourself.
Sorry, I have no words of wisdom as such but will definitely follow this thread as I'm interested about what you could do.
Alcoholics act like children most of the time, but you are right, you cant stop their pocket money or take their mobile phones from them like you could with a child.
Boundaries are usually about walking away, not reacting or leaving, but what you have said to your husband sounds clear enough to me, perhaps he is 'testing' you. The only thing I can think of is that it is a 'weak' boundary. (one you cant enforce) Sorry I cant help more!