I think it's fake guys, you can see the wake in FRONT of the "shark". In higher qulity videos you can see that much better. Probably a jetski pulling something like a trolling diver (any fishermen out here?) with a fake fin attached. Plus if a shark of that size would swim so close to the surface so that the dorsal fin is almost completely out of the water you would see the caudal (tail) fin breaking the surface. Also i'm not an expert but i reckon a shark would just dive deeper and/or thrash trying to tear apart the meat. :idunno:
If it is not fake then i must apologize for wasting everyones time and i would like to offer a giant "What an idiot" to the star of the video.
I have to agree with Ga41, it just didn't look right to me. Plus the shark swimming in a straight line for that long? I would of thought after biting one would of went for deeper waters