Underrated post! Anticipation calls on a defender in a “bad” position are all too common.
I know everybody railed on the refs most of the game. And there were some calls that were off, for sure.
But down the stretch, the refs mostly appeared to just let the two teams play, and play hard. I was seeing a ton of contact (both ways) and the refs seemed like they had made up their minds to let most stuff go. I think, for the most part, that when the refs let the players play physically, it benefits RU because RU seems prone to getting into early foul trouble when refs call things tightly.
It was almost like, in the second half in particular, they started out by calling stuff pretty tight, perhaps to keep things from getting out of control and then gradually eased up on the calls once it was clear the teams were exercising some restraint on their own. This is pure speculation, of course. But it's hard to explain the variance in how tight or easy they called stuff across the full 40 minutes.