You're making a lot of assumptions there and all the Cardinals had to worry about was the Hal Mary as a field goal wasn't an option at that point. If are blitzers are ineffective he could've stepped up and have a 65 yard throw or so without falling backwards. I remember Greg Williams getting roasted against the Jets for a cover zero blitz (sending seven) against the Raiders where Carr was somehow able to step up in the pocket and throw a strike to a WR single covered. Plus, if he did blitz seven and he threw a quick pass to the sidelines to get us in field goal range McDermott would absolutely be criticized.