typically your hands go on the other skinny pipe like thing, and your feet go on those spikey flat things... unless your name is jackson and youre shredding a run bike.
bet this hurt though
just order a replacement part - their designed to break when you have a force that would have broken your neck - i trashed mine in winterpark - snapped the back plate and busted the inside of my helmet - you can replace all of that, no need to buy a whole new one... hell you can even find new styrofoam for the inside of the d2