I think you are doing the right thing by leaving him, going NC etc.
When I got out of a 30 day rehab 7 years, I was SO GRATEFUL to my spouse and adult kids for stepping in, finding the rehab and making me go. I still am. They saved my life.
He's being incredibly immature, selfish and mean. I'd delete him from your life ASAP.
I'm really sorry this is happening to you.