If anyone has a reason to be mad at referees, it’s Jim Harbaugh. That spot on 4th down was questionable at best. But it turns out, that’s not even why he’s mad. When he got to his press conference after the game, he complained about his personal foul from earlier in the game.
Once again, the officiating was suspect. Don’t blame him one bit. If this was the NFL he’d get fined, but this is college football. He can say what he wants about the refs.
Eventually, he got around to that 4th down play.
That’s how rivalry games go, though. Maybe next year.