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.
https://www.facebook.com/Break/videos/10153639528342792/
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.
I think the spin he initially gives it at the start make it curve back in at the end due to friction. The spin he gives it when he finally rolls it on a different axis makes it curve the other way at the start.
