Don't forget that while you are accelerating one wing you'll be decelerating the other. Maybe enough to induce a stall and, therefore, spin in the opposite direction to your wing drop.
Yep I see the argument now.
The fact is though I've seen the rapid yaw to catch the wing demonstrated and have used it. We never entered a spin in the opposite direction. It's all one smooth movement, catch the drop nose down, power on and recover.
Remember too I was talking about accelerated stalls or if you like power on stalls, when very likely it is the outer wing sections that are stalled first (no airflow from the prop) and wing drop can be very sudden. I can't imagine how one would simply put the nose the down and level the wings from that flight condition in a Warrior if the wing drop wasn't first caught by rudder, the thing would be in an extremely uncomfortable attitude by that time and likely the story would be over.