I hope you can find your boundaries and stick to them.
If he gets out of line, i.e. screaming, fist pounding off tables/counters, kicking and destroying things, threatening in any way shape or form, call 911 and you have his ass hauled out of that house.
You do not have to put up with an overgrown manchild who has never grown up. I'm thinking he oughta have a job because his ass is gonna need one if you stick to your boundaries.
Draw the line in the sand and if he crosses it, show him the door. Say what you mean and mean what you say!