What adjustments can you make in the passing game when your QB has lost all confidence? Even simple throws to the flat were not happening for him. The QB could no longer run, and Penn State realized that, effectively torpedo'ing the run game. They tried opening up in the second half when they realized that PSU knew Barrett couldn't run, but the direct snaps to the H-Back didn't work and the deep passes by Barrett were atrocious.
I think it's time to accept this is an offense with no game breakers. There isn't a Percy Harvin. There isn't a Braxton Miller. No Terrelle Pryor, no Ted Ginn Jr, no Beanie Wells. Devin Smith is the closest the 2014 Buckeyes have, but the limitation at QB will keep his deep vertical pass game in check. This is an offense that has to methodically move the ball downfield, and requires 5-10 yard passes to do so. On a day when our QB cannot make those passes, our offense is just not going to work.
Mini rant. I really get annoyed when announcers keep saying how dynamite Dontre Wilson is in open space, and how he's a threat to take it all the way every time he touches the ball. Really? Has he ever?