The Hawk v RoW: 14...Nxc3 15 0-0

The majority of the Rest of the World voted for the tempting 14...Nxc3. The Hawk replied by castling 15 0-0. So The Rest of the World has an extra piece! Is it all part of The Hawk's plan?

A very tricky position! What would you play as Black? Please vote in the usual ways!