Car buzzes, even when off with key out, after minor rear ender

[kadinga]

Title says it all. Stock Talon, 260+ kms on it. Got bumped by a massive chev with swampers at the beach. Drove home later and when I turned my car off there was a crazy buzz/grinding sound coming from the engine. Ummmm, WTF?????
I disconnected the battery to shut the damn thing up and prevent further damage but I am really getting down to the last straw with this machine.
Any help would be AMAZING!! Thank u 4 dsmtuners!!

 

[luv2rallye]

To help we need to know what's buzzing. Look, listen and feel around to identify where it's coming from.