I think you realize you are attached to an alcoholic right? It comes down to two choices really. Either you stay and endure the misery you have detailed waiting around for his snippets of sobriety (which will lessen and lessen and his aggressiveness will intensify) or you tell him you have had enough and mean it. He gets helps or you are outta there. Sobriety is a deeply personal battle. It is one we need support with, but ultimately it is our decision and our decision alone. If you give him this ultimatum, be prepared to stand by it. If you wish to stay regardless..then do yourself a favour and join al-anon or the Friends and Family Forum. There you will find support from those living with active alcoholics as well as those coping or gathering the strength for the leaving.
I'm so sorry for your pain.