How can I push my player with a rotating object.

I have a spinning cuboid that is supposed to push the player. I can contrained the rigid body on the cuboid to not move on x,y,z but it is free to rotate. I push a ball in the scene and set the cuboids mass to 1000 so it would push the ball out of the way. This works.

However when I put the player in the way of the spinning cuboid it stop the rotation rather than pushing the player out of the way. See here...link text

How can I push my player with the rotating object?