to FRF.
Is what you're talking about?
If the rubber gives (highly unlikely) you'll get a lot of slop back and forth but it would take a lot to shear the pin. Probably a lot more than your tow combination can produce.
I've never had the kind of problem it's designed to help. Most of the issues with hitch shanks are side to side slop in the receiver tube which this does nothing for. It would also be useless if you needed any kind of weight distribution.