JWF - letting go will work in MOST aircraft, but some DO need a proper recovery technique to come out, and advocating this instead of learning the CORRECT recovery technique is potentialy lethal on some aircraft.
Flickoff - If you push forward you will unstall the aircraft, so it will NOT convert to a negative spin ( unless you keep pushing forward and stall it AGAIN, still with yaw , but to do that accidentally would be INCREDIBLY ham fisted)