Pilot who is doing the recovery should have the knowledge that FDs don't provide unstall guidance and ignore and just fly the attitude. If it's not in the procedure why waste time switching off FDs?
Airline pilots probably spend 95% of their flying hours following flight director commands. All the more reason for switching the FD off in a critical situation like a stall recovery where blindly reverting to habit and following FD needles could lead to a more serious problem.