Bro, just because his mother thinks he's shit doesn't mean anything. Not saying Dana's not scum, but mother's can be fuckwits too.
What do you mean there's no excuse to ever put hands on a woman? That sort of thinking is just enabling shit behavior by both genders. You're saying it's alright for girls to get away with whatever, and you're saying men shouldn't do anything. There's plenty of situations where it might be called for. Unhinged girls have abused and bashed the shit out of plenty of guys lol. Not every man is some able bodied guy who can't be physically harmed by a woman.
Think of the manlets, such as myself. If some 6 foot plus girl with a bit of weight was on the beers and started getting violent with me there's probably not a lot I could do to stop her once she got going, but that doesn't mean I shouldn't at least try to defend myself just because she's a girl.
And you mentioned Dana threw her to the ground and looked like he went to kick her. Where the heck is this video? The one that was going around didn't show him throwing her to the ground.