Happened to me once riding down to Capitola, CA. Very twisty road, just putting along and then I am on my butt watching the bike slide away. It was weird, but no harm, no foul and I continued on without thinking too much about it. That evening we went to the neighbors for a swim and the hostess asks me what happened to my leg. Not having any idea what she was talking about I looked down and my leg was black and blue from top to bottom?
?? Then I remember the get-off and muttered something about crashing on my scooter. She looked at me like I had just grown another head.