I don't believe he had anything other than maybe soreness or slight hamstring to start the Bama game. This play right here, says enough to me. He avoided the rush, sprinted ... threw a strike.
Also all these people saying he could have ran for 20-30 yards. Nope. Bama had 7 spying, 5 near and the DBs around the play.
With all that said, he could aggravated something during the game. But I did notice he walked off the field (no limp) after the 3rd and came back to the field albeit in a boot but didn't seem to be in pain when he was walking around the field congratulating Russell post game