Looks like the story is he was drinking and asked his partner to have a threesome with a female friend of theirs and got jealous because he thought his partner was paying more attention to the girl than him. He wouldn't leave when asked and in the scuffle he tore his partner's shirt and scratched his arm. So while it's still assault and DV because they are together, it seems like more of a drunken temper tantrum than him straight up beating the shit out of someone. Not a good look either way mind you, but that seems to be what happened.
Also, it sucks that this appears to be how he was outed since I don't recall any mention of it before, his partner is (was?) Duke Hudson from NXT.