Can you go to mediation to agree how to live togther until the legal orders are sealed?
sounds like he is still processing his emotions and stuck in anger mode (think of it as grief pathway and look at that). If you’re the one that’s instigated the divorce, then you are way ahead of him on that pathway and he is lagging. Sure, using your child is dickisk if not abusive.
so first start to record all the comments he is making.
then try to suggest you sit down and discuss rules for engagement whilst you’re still under same roof. Try to write stuff down. Try to avoid contact. Put stuff into routine.
if he won’t engage in thst, then suggest mediation to talk through how to manage this period in a way that’s less stressful for you both. Don’t make this about just how you feel, his anger is a reflection on how he is feeling too, albeit it very negative and by the sound of it inappropriate.
report any abuse to police. That would literally be the ONLY way you can force him to leave, by getting a no molestation order (or equivalent) that bans him coming x distance to you that then effectively means he has to leave. But that’s involves police and courts, so you will need hard evidence of criminal behaviour.
otherwise, unfortunately, you have to just get through it. As time progresses he will hopefully start to process his emotions and move towards acceptance and what he needs to do to get on with his life. Maybe not, but don’t engage, don’t fight with him. Acknowledge his “anger” and say you will not engage. Or grey rock if you must.
as I say best hope is he and you can agreee to a spot of mediation to define rules and behavoiurs around how you live this period of your lives.
as other posters have said, you can get though it. Focus on making divorce as quick as possible. Use ADVICE NOW guides linked at top of this board if you’ve not already. Knowledge is power .