Culpable for? You act like the staff willingly and knowingly did something wrong. They didn't. There was a problem, it was addressed, and well over 100 players didn't have an issue. Further, the players in question received immediate care. They were not ignored, their symptoms weren't minimized, and they were treated appropriately.
You know what this thread has shown me? That there are fans out there who will turn on a Nebraska coaching staff for the most trivial of things. It's almost as if you're looking for an excuse to not like this staff. Well, congrats...HCSF and his staff have been on the job now for two months and you already have your "reason"...let the vitriol flow. /sarcasm
Look, I'm not trying to be rude, but I think you're over-reacting here. However, this being the internet, carry on.