well, i did something stupid...
i put my fiddle in the case with the practice mute on, and the lid of the case promptly closed and whacked the mute down into the bridge. (oops.) as far as i can tell, it still sounds fine, but the bridge now looks like this: http://www.flyingparchment.org.uk/dump/bridge.jpg
you can't see it very well from that photo, but the strings are also bent out of shape around the bridge.
i'm not worried about the strings, as i was planning on replacing them anyway, but i'm wondering if i should have the bridge replaced?
(as far as i can tell, i managed to avoid cracking the sound post or anything major like that.)