This didn't work for me :-( Do you actually have Ironfall installed? I don't, maybe that's the problem. Also, between running the game and shutting down, so you press Home to quit the game and then turn it off with the power button? Or do you press the power button during the game? I tried both of these.
Can you describe the timing a bit better? This is what I tried:
A) ejecting then mashing A as soon as I saw the blue screen
B) ejecting then mashing A near the end of the green screen (which is just before the blue)
C) not ejecting and just mashing A when I saw the blue screen
D) ejecting then mashing A near the end of the blue screen
E)Not ejecting and mashing A right when FBI is trying to start up (red screen)