Welcome to the SR family!
You are a good mom! You are taking steps to protect yourself and your children from alcoholic behavior. Your action of sending him away has caused a reaction in him. His reaction = His problem.
I had to remember the three C's when dealing with my alcoholic:
I did not cause it
I can not control it
I will not cure it
I sent my alcoholic out of the home. I went NC (no contact). The only time we spoke (until he learned to behave civilly) was concerning his bills or our child. Anytime he started the quacking (alcoholic talking) I told him: "I am not going to listen to this" and I hung up the phone.
I also had to remind myself that his unpaid bills, missed appointments, etc. were not my problem. not my problem. not my problem.
Please make yourself at home by reading and posting as much as needed. There are sticky (permanent) posts at the top of the forum. They contain some of our stories and loads of wisdom.
This is one of my favorite:
http://www.soberrecovery.com/forums/...l-problem.html