Clowery,
Your AH is just trying to keep you confused. He doesn't drink all day and then your whole family hangs out. Then the minuet the kids go to bed he slams you with I WANT A DIVORCE. Classic, try and blindside them to keep them confused. Then to top it off, says that it's your rules (not the alcohol) he can't live with. While he might not have drank the entire day he was still in the mind set. He is doing everything he can to keep the status quo. He doesn't want you to leave, but also doesn't want to give up his precious alcohol. He is trying to make you feel like this is all your fault. It's not and the part about recording the conversation. When would you have had time to pull out your phone and start the record button. I think he would have noticed that. He is paranoid and knows he is in the wrong and wants to make sure there is no proof that will come back at him. You did good by just walking away.
Just keep on with your plan. Until he admits to himself that he has a problem it is only going to get worse. Make sure you and the kids are safe. Have a good day and keep being strong.