Welcome Nightowl!
It doesn't matter whether he calls himself an alcoholic or not. His use of alcohol is affecting your family negatively. It doesn't need a name besides "unacceptable" or "acceptable". You are the only one who can make that distinction. Staying and going are individual choices and depend on so many things that only you know about. Talk to your girls. Search your heart. Come here and spill so you have a place to get it off your chest and organize your thoughts. We'll be here for you whatever you decide... and you don't have to decide today.
Hugs,
Smoke