Some quick thoughts:
1. I'm not sure what the issue was with the defense in the first half--Iowa was running the ball at will, and they seemed to only be running one pass play--the play action and hit the TE on a drag route. The fact that OSU couldn't stop that Iowa defense for an entire half raises questions about the defensive coaching.
2. You cannot have such a draconian penalty (ejecting a player) if refs are going to be trigger happy on calling targeting and your replay official isn't going to be good enough to clean up the mistake of the on-field officials. Roby led with his shoulder and hit the TE in the chest--it was the Iowa TE's head snapping backward from a hit in the chest that made the hit look bad. Sadly, blunders like this out of Big Ten officials are nothing new. It'll be interesting if the league office provides an explanation as to the application of the rule to that hit, and why Rob's ejection was justified. But if past experience is any indication, the no accountability rule when it comes to Big Ten officiating will probably rule the day.
3. The offense is near unstoppable. Every once in a while, play calls are the only thing that seem to trip it up. For example, with Hyde running the way he was yesterday in the second half, on the drive that ended with Basil hitting the chip shot to go up 10 pts late in the game, the Bucks had it first and 10 at the Iowa 11 or 12. The first play was a screen to Hall, who tripped over himself and got 1 yard. The second play was some kind of delayed run in which Braxton tiptoed to the line, danced around, and got no gain. Hyde up the middle for 3 on 3rd down. FG on 4th. The way Hyde was running, I'm not sure why he wasn't given the ball three times in a row.
4. Back to #1. The defensive coaches better be prepared this week. There's no reason OSU shouldn't beat Penn State, but PSU has shown flashes and their offense can be every bit as good as Iowa's, which OSU made look unstoppable in the first half yesterday.