Hope you had the same lovely weather there that we had here today, sunshine lifts everyone's spirits I think.
He is being nice, nasty, threatening, demanding..... er so no change then from before you left?
Still no sobbing and begging you to come back and crying about what an arse he might have been?
No, so he is still just thinking of himself.
Many of us have said it before. But here it is again.
STOP WORRYING ABOUT WHAT HE THINKS/WHAT HE WILL DO/HOW HE WILL REACT to anything you do or say.
Let others have all contact with him for now, get yourself a solicitor and next time he tries to make contact tell him to contact you through your solicitor. Even if you are not going down the divorce route just yet you can arrange contact with the dc's.
I think you really really need to ring womens aid in the morning to say that you have left him but need support and advice about him turning up.
Well done on having got this far, but you can't get on with your new life properly until you have shaken off the old one. That means no direct contact with him and no worrying about what his brain is up to.