Went through this in 2004. If the offense is ineffective, it's just a matter of time before the defense gets gashed. You can't go 3-and-out series after series and hang the D-Line out to dry like that.
1st half, Martinez was bottled up and Burkehead was literally going out of his way to take tackles for loss from other Buckeyes as long as it wasn't John Simon hitting him.
2nd half, they were ripping off 5 yard runs on bad plays. The good ones were 20 yards or longer. There was no pressure, and on the few occassions there was (which I could count on one hand), there was no pursuit after the pocket broke down.
You can't do that to the defense. Even if you only grind out 4 or 5 minutes for 30 yards and still wind up punting, the defense at least gets to drink some water and rest their knees. The offense was totally ineffective after Braxton's legs were taken out of the equation.