If I am McDermott, you stick with Peterman. You already made the move and made your bed and you might as well see what you have. Yes, Peterman had an awful day. Rookie QB in his first NFL game that had a fluke Int in the first drive and then tried to keep forcing the ball from that point on. Give him some more reps and see if you can work on his aggressiveness. Take your extreme, the QB who won't take risk or the QB who takes too much.