I mean this in the kindest way possible: You should take the fact that he doesn't know what he has done wrong as absolute validation that you have done the right thing. He believes he has done nothing wrong. This is the man who has been so abusive and controlling to you that you have had to leave and that even planning your departure has caused you stress and terror. And he believes he has done nothing wrong.
@Coco26 I can't stress enough that this, above, is something you need to pay attention to. This was exactly my situation. He'll never accept any blame whatever, he brushes off any attempts to explain clearly why I left. Deep down he knows, but he can't admit it, because that would mean accepting blame, and he can't do that.
Yes I was relieved to leave, but my emotions did jump all over the place over the next few days until I began to settle. It wasn't instant.
Don't fall for his poor me act. Please just don't. Without anger lay out EXACTLY why you left - do not talk to him. He will have an answer for everything and will talk you down.
This, as well. I couldn't talk to him because he'd twist everything until I agreed that everything ever was my fault. I wrote a letter, because he'd persuaded my dad that he needed answers. I told dad it would be a waste of time, and I told dad excatly what I'd get in return, I could predict it. Dad was so shocked when lo and behold, the brushing off and minimising and twisting I predicted happened. Dad could not dismiss it as me not understanding, it was all written down to see.
Dad doesn't like him anyway, but dad's a people pleaser, too, hence asking me to write a letter of reasons (and I only put a few of the worst examples in, like sexual abuse and rape - he dismissed this as "just trying to spice our sex life up").
Take your time before talking, if you ever need to talk. Otherwise it can all be done in writing. You have time to read and re-read anything in writing before sending. Don't agree to anything where you are pressured into an instant response. If he calls, "I'll think about it and get back to you" with no timeframe is best right now.