I don't know why people think it is impossible that the pilots would not have some lapse of reason. A couple of years ago, driving my car towards a traffic jam, I temporarily forgot which was the accelerator and which the break. It was just a moment of doubt, and happily did not result in an unfortunate result, but I am quite sure this must happen (albeit very rarely) to a lot of people in the wrong situation, especially with fatigue and adrenalin, when automatic responses suddenly get reappraised, or when you find yourself out of the envelope.