Someone reversed it and it seemed that the right circle was getting larger when the gif was reversed. I find this very interesting. One thing I do know is that counter clockwise direction is typically the direction for a positive torque (moment) in engineering physics which is essentially a vector coming out of the surface, whereas clockwise is a negative moment and its vector goes into the surface (down). I dont know if that has anything to do with this but it is a interesting coincidence if not.
Technically its a normal vector to the force and lever arm and either positive or negative but Im trying to simplify.