Gald you weren't more seriously injured. It was a good thing you kept your hands on the bars. Too many people break collar bones trying to break their falls with their hands/arms.
I did a similar thing on a wet steel grate decked bridge years ago. It is amazing how quickly you can go from upright to on your side.
__________________
A conclusion is the place where you got tired of thinking. - S. Wright
Favorite rides in the stable: Indy Fab CJ Ti - Colnago MXL - S-Works Roubaix - Habanero Team Issue - Jamis Eclipse carbon/831