There is a popular video on facebook that I just don't understand. A man spins a bowling ball very fast then slightly taps it down the lane. Somehow it does half of a figure eight, curving around two pins. Can anyone explain the physics behind it? Intuitively, if it is spinning one way, it can only curve one way.
Update: The answers have left me more confused b/c they disagree, so I assume the correct answer lies between both of them. B/c more work was given to draw up a diagram, I have given the bounty to him.