Is going to bars to get drunk with an alcoholic really "getting the best of him?" Doesn't sound like you are missing anything important....
Many drunks who lose a relationship due to their drinking make a big show of their new freedom. My ex did. Soon enough his new GF (also an alcoholic) also kicked him out. As did the one after that. Both of these women were smarter than me in putting up with him for much less time than I put in. Currently he's homeless and unemployed.