I don't have a problem with Clifford coming back. He was playing pretty well before he got hurt vs. Iowa. He was, in my opinion, pressed into service too soon vs. Illinois when he could have used the time to heal. My issue is why was CV able to competently run the offense against Rutgers, presumably coming in cold with little first team work in practice, yet the staff didn't take the two weeks leading up to Illinois to get CV (or Roberson) ready to play? Illinois was a bad team, much like Rutgers. I say CV didn't get much work during the week because if you recall, all the QBs were sick during the week leading up to Rutgers.
That is where Penn State's philosophy with QBs isn't good. I don't necessarily think a guy should be on a short leash, but if he is at 50% or less, play a backup. They had 2 weeks vs Illinois to get someone ready. They didn't do it.
Hopefully Franklin added backup QB prep to his notes, right next to the note of "don't get the guys Chik-Fli-A during a stupidly long weather delay."