Northrup was being true to himself by not wrestling a girl. It is against his beliefs to do so. IMO he is not imposing his beliefs on anyone else. The other guys wrestled her. The only person to make a sacrifice in this situation is him and he was okay with that. And apparantly she was too. The two kids involved acted with more class than most adults have about this, expecially that Rick Rilley character. What a blow hard.
I would love to see Iowa offer womens wrestling, but if they don't I have no problem with girls wrestling with the boys. I'm sure the guys feel a little awkward wrestling the girls, but I think they get over it pretty quick once the whistle blows.