i had a similar crash yesterday on my peugeot. i was heading downtown for mardi gras, trying to "pace" my buddy (as he tends to ride super slow). i'm doing about 15-17 about to make a right. well i tuck in, and just as i did i saw a sewer lid with a little hole in front of it. well i lift the front and clear the sewer lid only to put it into a pile of loose gravel. down i go, water bottle flying and my bike skidding across the road ON THE DRIVETRAIN and my Brooks Pro

nothing bad though. this is my commuter bike and it's pretty scratched up. i did manage to knock the front axle crooked in the fork, and ripped my palm up a little. now i have blood speckles on my white tape. lol

fwiw, i have also rode into a ditch. being complacent and looking out over the beach. looked up in time to brace myself. i had a good angle though, because i just rolled down, and then back up the other side. scared the crap out of me though.