There were 4-5 really bad holds, a facemask on Montgomery and a horse collar on him that were all easy calls that were not made. The PI, I guess I don't know. It seems like everyone grabs Lazard at the LOS and holds on all the way down the field. Maybe that isn't PI, although it sure seems that way when ISU defends like that.
There was a lot of holding not called and that facemask you mention was atrocious. He was facing one way and the guy was pulling the same direction, so you could clearly see the arm pulling away from him. I didn't have anything against OSU, but between that and Gundy's horrible hair , I hope they lose out.