It's referring to Kane getting really, really drunk at some party in Wisconsin and lots of cameras were around taping it. Saw it on Twitter. Apparently a girl rejected Kane too, and he choked her. Don't know what ever happened with that. I think Hughson was just trying to add context but it came out bad.
I see the mooning as a non-issue. Not even comparable to what others have done. It's what happened previous. Trying to get in the guard's car, scaring the guard with 3 or 4 men around.
I feel that's what is still making this story relevant. Whether you're aware or not, girls being harassed, scared, etc is a real thing everywhere. Especially at night. It's not a good look in that sense. I get it was a joke. Still a bad joke. Matthews is fine, and people will get over it. Heck, most are already.
He shouldn't have said little problem. But in sports, winning cures everything. That was his point.