Constraining the rotation fixed rotating aka partying pawn for me , but if threw the chair around enough, my pawn starts to slide.
Adjusting linear damping under Physics in the CollisionComponent to a higher value seemed to solve the problem.
I like to think of it as a “For every action there is an equal and opposite reaction” scenario wherein i was thrown back since i was throwing the chair around.
But by increasing the linear damping, I in turn increased my frictional resistance and could throw away to my hearts content.