Yes, that sure will dampen the enthusiasm in Pittsburgh. Must be a very scary situation for a future NFL player. For us, we will not need Ruiz until the league opener in South Dakota. Plenty of time to rest assuming there is no structural damage.
Two more things about the Pitt game and then I move on to the next one. First, this bickering about offense versus defense is really silly. Pelini stated it best in his post-game comments. The loss was on the coaches, the offense, the defense, and the special teams. Everybody has to get better. Second, we are all overlooking an unfortunate coincidence that might have really hurt us in that contest. Remember that Sims saw our offensive linemen every day in practice for several years. He knew their strengths and weaknesses and was able to take full advantage of them with his superior athletes. We can all hope and expect that no FCS team will neutralize our o-line as effectively as Pitt did.
Finally, one off-topic comment. Did anyone notice that Nebraska and their "perfect gentleman" head coach lost at home to lowly (by P5 standards) Brigham Young? They allowed a back-up quarterback to beat them with a last minute Hail Mary. Hilarious.