Irish, MLC is a gradual thing, it doesn't happen over night and the changes are so subtle, you don't really notice them until they drop the bomb on you. When you have some time alone and can think clearly, you may very well be able to think back and actually begin to see some of the changes happening back then.
Many of them will change both mentally, emotionally, and yes, phyiscally. MLC is like shedding the old self and more like the peeling of an onion, layer by layer. The venom will continue for quite some time. The less you provoke him, the less the venom will spew at you. He's a very angry man. He's angry at the world, himself and everything and everyone around him. But, in his eyes, you and the relationship are what is creating all of his problems. Trust me, you aren't, but that's what he's thinking.
If you have put boundaries in place, please stick to them. He's like a child testing the waters to see just how far he can push you before you'll give in. Just as a child will do, he will try every which way to get under your skin. Look at his behavior that way and you will be able to tackle any situation he throws your way. He's a child in a man's body who is seriously trying to grow up.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.