Personal take...
F/D's on/off during a stall recovery... In my book, whatever. As quoted above, you ignore them anyhow.
My issue is distracting the PM (essential part - right!) from the monitoring task during the recovery by asking for the FD's off. The PM simply isn't expecting it! Will take them by surprise and distract them from the key monitoring function.
Was it a fail though? Errrm, (IMHO) No way! Discussion item, but only if the examiner is feeling picky!