Video heads provide some resistance (drag) when you aim the camera back and forth or up and down. Otherwise the camera would just flop around. Good camera heads provide lots of adjustment for the amount of drag from almost none to very great. This is because the heavier the camera, them more force is required to move it. The problem with the Manfrotto is that you can't reduce the drag enough for a small camera with the result that when you try to move the camera back and forth (this is a pan) then the whole tripod moves rather than just the camera.
FYI
Pan = point camera left/right
Tilt = point camera up/down
Dolly = move whole camera a tripod towards or away form subject
Truck = move whole camera and tripod left or right
pedestal = change the height of the camera relative to the ground
zoom = expand or contract angle of view with the lens
Good little article here:
http://www.videomaker.com/article/14221/