Then you now know for sure nothing's actually changed. He will only be able to keep this up for a short time and then it will be more of the same. God know what affect this has had on your children, but know that it can and will get worse unless he really and truly seeks sobriety and recovery for himself.
You already know everything you need to know. The hard part, and I know this from experience (almost ten years with a drunken wife and now 16 year old daughter), is taking that knowledge and using it to make the best decisions for your and your children.
Alanon will teach you how to do that. Your first step, not his, is to go to an Alanon meeting. Try at least six before deciding if it is for you. Here:
Al-Anon / Alateen Family Groups, Pennsylvania Area | pa-al-anon.org