Well, we couldn't run block with him in anyways (OL bears that responsibility) , so I can't say it's a massive blow to the run game. Pass catching, I'd honestly prefer if we'd use Langham instead of IrvinG. Have to hope Rosier pulls his head out of his *** as there is no way to work around bad qb play against Clemson (could have against Pitt, but Richt chose not to). Agree with up tempo, and going 4-5 wide. I'd start with rb in backfield then flex him out to wr to make Clemson pause and figure out how to defend him (might take a lb out of position and open up run lane for Rosier). And I pray Richt stops trying to go deep all the time on first down as the series nearly always ends in a punt if Rosier doesn't complete the pass. Take the deep shots on 2nd and short.
Standard run game with five OL will probably suck anyways, I'd like to see DJ in the Wildcat with 6-7 OL to manufacture some semblance of a ground game.