You have got to be kidding me I am dumbfounded that you don't think it is at least a possibility. Im dumbfounded that you think a professional athlete as competitive as Cutler would just [expletive] quit. You cant be that ignorant, you just can't. He freaking quit the entire first half. Were you watching the stuff he was pulling? It's possible his concussion occured earlier in the 1st half and Cutler didn't mention anything thinking he could shake it off.