So the answer is let a deaf pilot spin you into the ground? I think an airspeed call (shout) would have been appropriate in this instance. x amount of hours shouldnt come into it.
The stall warner is there for a reason, if its constantly blurring during a turn you are approaching or at the stall. If the guy flying cant hear it and there is no visual indicator article 142 wont get you out the **** that is potentially developing.