Police response to dv can be something of a postcode lottery as can the response of the agencies that follow through after an incident has been reported. I think it's fair to say that you have struck lucky in your police force and also in being allocated a dv worker who clearly knows what they're doing and has already done so much to help you see the wood from the trees.
What you're doing is absolutely right - you're proving that you're not going to roll over for him or live your life in fear of a big girl's blouse unprincipled twunt.
I'm filled with admiration that you found the courage to open your windows - which, incidentally, will have caused a flow of air that will have removed any remnant of his unwelcome presence that may have lingered - and reclaim your home as a place of safety and sanctuary.
Going by your list, it seems likely that Friday's events were occasioned by him having extensively obsessed over your temerity in refusing his kind offer to 'return home' to look after you when you weren't, in his view, 'coping'.
I suspect this was the moment when he realised that you truly were out from under and he was not going to have opportunity to exercise control over you again, hence his ill-fated attempt to exert his authority by physically attacking you which no doubt seemed like a good plan to him after he'd necked numerous alcoholic ego boosters - and what a cunning little shit he was to assure you that he was sober when he called to invite himself over.
perfectstorm has alluded to something I've been pondering which is that, as frightening and as painful as your experience was and will continue to be, he's done you something of a favour because any 'invisible threads' that bound you to him have been well and truly broken and you are, indeed, seeing him for what he is rather than superimposing a rosy glow from yesteryear over his true character.
Even though it's very early days it's patently obvious that you're going to go from strength to strength. Although it may not seem that way when you get shaky moments caused by the shock of your ordeal and the strain of coping with the various ramifications of this incident which will only be resolved by the passing of time, don't ever doubt that you will grow and become infinitely more your own person as a result of this unnerving and unsettling experience.
I didn't expect him to hotfoot it to your place as soon as he was a free man but I suspect that mil's call yesterday is but the precursor of more pleading overtures which may turn nasty on a dime if you continue to abruptly rebuff them which, of course, is exactly what you must do to keep yourself and your dc safe and keep her and her dc away.
Plans for today: 1. move bin away from corner or leave it in situ and use it for target practice. 2. Encourage dc to take up baseball and leave their bats near the front door.
Well done, Hiding. Way to go 