Okay, I respect that you confronted the issue. But how clear are your boundaries? You tell him that you are no longer willing to live with an alcoholic, and you won't anymore. You won't put up with it "for even one more day". So what happens tomorrow? You set some very clear boundaries, but are you ready to follow through??? That's the problem with those kind of boundaries. If we don't follow through the A learns very quickly how to manipulate them.
Maybe you have spending issues, I don't know. From what you say, doesn't sound like it. But the A will find anything, and everything, to deflect away from the alcohol issue.
You would really benefit from Alanon. Find a meeting near you, and make an effort to attend. You don't have to share, but there is alot to be gained from listening to those who have been in your shoes. Your kids need you to be healthy, and to make the right decisions for them. AlAnon will help you guide them through this.