I saw a body when I was snowboarding once. He had been there for a while, and they were wrapping him in a tarp to put on a sleigh to get him off the mountain.
It bugged me for a few weeks, but even though what you saw sounds a hell of alot worse than what I saw, im sure you'll be able to get over it in a while. Have you thought about counselling or anything? My friend saw some dead people on the highway once after a huge accident, he went to counselling and said it really helped alot.
