No yaw always equals no spin which usually equals continued living.
The issue of what aspect of aircraft motion turns a simple stall into a spin is an interesting one. I recently saw a compelling argument that it is
roll rather than
yaw in the stall regime that is the most important contributor to the commencement of autorotation, because of the instability of roll damping in the stall regime. Nevertheless, preventing yaw has to be a good start...