If it's not something as simple as what dknoll said (hopefully it is), maybe it's something as simple as it being stuck in gear, or the bike thinking it is and not allowing the engine to turn over?
We need a bit more info man.. Do you have power to anything on the bike? Does the bike turn over but not fire? Does it turn over and sputter slightly? ... Just some general info.
I know there is a ground wire underneath the air box, above the shifter.. Might have been hit?
Glad you're well enough you're not in a hospital.
