Just want to record this as well, before some of the details drift off.
So. Last night didn't got that well with the boys going to NSDH's for dinner. He wanted to discuss the email he'd sent, denied that I was feeling pressurised (!!!), and started the guilt trip about it being more than just me involved, he had to think of his daughters, etc, I needed to open up more, I needed to communicate more (I told him I did not need to do any of these things, which went down like the proverbial lead balloon). When I picked the boys up, there was more. We got onto talking about Christmas, he made a comment about getting a real tree this year because the girls would be here and it was a proper Christmas. I was outraged - so we weren't a proper Christmas last year, all because his girls weren't there? He tried to claim that's not what he meant, but I know it was because he's made similar comments before - we weren't allowed to do anything on DS1's birthday this year because the girls had to go home in the morning of his birthday so we had the special tea the night before. And because the girls wouldn't be around for the day of his birthday, we couldn't do anything. 
Anywaaaaaaaay. He was talking about making it a nice Christmas for the girls, that's what he wanted to do. I said what about me last year, why couldn't he have tried to make it good for me last year, instead of spending the whole time yelling at me, pushing me about, screaming in my face, frightening me. And then - wait for it - he came back with: what about you, you were arguing too.
I was gobsmacked. So, despite all the emails he's sent apologising for being abusive, yadda yadda, when faced with it he can't do anything but put the blame back onto me. Apparently how he behaved was ok because at the time I was daring to argue back at him when faced with the barrage of his abuse. Fuck fuck fuckity fucker. Excuse me. 
And even then, when faced with such FWittery from him, such obvious lack of change and lack of insight and empathy, when faced with him asking daring me to say if I didn't want to work on things at some point in the future, I couldn't say a final no, I could just mumble that I didn't know if I wanted to work on things.