Its part of riding, never happen to me but its something we have to expect living in Florida with all the rain most summer days along with the sand for soil. You should always keep in mind when its windy you will have more sand on the roads and parking lots than normal, plus all the washouts we get after a thunderstorm. A few years ago I left a club in my firebird, was going about 70 MPH coming up on some S curves, little did I know that it rained in that area earlier that day which wased a bunch of sand onto the road in those S curves, my car spun around 3 complete 360's, I almost shit my pants. I was just glad I wasnt on a bike.