Hi everyone, just dropping in to let you know I'm ok!
Had a tumultuous few days. Having a lovely time still with our daughter, my husband's mood is very up and down. As an example, he was ok all day yesterday, almost quite pleasant in part, but then yesterday evening I mentioned that I could go to work at a (female) colleague's house next week to get out of his way. For some reason that completely turned him and he started being extremely rude and threatening, couple of examples:
'Remember that I have loads of contacts in every firm that you could work at, and I could make everyone aware of what you've done, so if you're thinking of playing hardball [with our daughter], don't' - that literally came out of nowhere, all I've repeatedly said is that we will agree at mediation what is in her best interests.
'Don't worry, there'll be plenty of time you'll have without her [our daughter] soon enough' - in response to me wanting to check she was ok on her own playing
Loads of other verbal abuse about me being a whore, he hates me, how my boss would love to hear all about it...
I attempted the tactics of @FantasticButtocks and said I was noting his threats and would be writing everything down. Unfortunately this spectacularly backfired (because it always does when I try anything that he is better at!) and he ended up sending me a huge number of WhatsApp messages saying how threatened he felt by me, how I was trying to cut him out of our daughters life, how I'd never allowed him to develop a relationship with her, how I'd been threatening all holiday that I wouldn't allow him to see her, how he's so intimidated by my threats, and so on. All just complete and utter lies.
Honestly I have no idea how to handle him because as soon as I show a hint of trying to take control he absolutely lets rip with the lowest of the low behaviour. He even randomly comes out with spiteful things like how he won't help her make me birthday cards and Mother's Day cards, which I don't care about for me but she loves doing things like that. He's just being so selfish 
Funnily enough, this morning he woke up and messaged me inviting me to come into his room for a cuddle!!
politely declined.
Holding onto the hope that once the dust settles he'll realise this is happening regardless of what he says, and he needs to start working with me on it.