Damn, poor guy.
I call it as: Long time (but not quite live-in) boyfriend gets kicked out. He videotapes his leaving to cover his ass against any vindictive domestic abuse/rape charge. Bitch comes in and starts laying in on him again. So he's already capitulated, he's playing off his packing to the kids so they don't get upset, and then she comes in, whips him a few times, tells him to do what he's already doing, and then goes off the deep end to stand squarely in the only path she's given him. When he rises to challenge, she doesn't work the problem (the collection of his stuff so he can leave); instead she doubles down.
The woman is waaaaaaaaaaaaay outta line.
Ladies, take note: Machine gun fault-finding with the total expectation of a win with every bullet because "the man is always wrong," can lead you into a bad situation. You are not entitled to wild, untamed, random emotions and to have every one be 'right' -- if you box the man in he may very well punch his way out. It is, after all, the natural and proper social correction to such a thing.