Replying to Screamin Seaman crashes

I really want to try a screamin seaman but i really really dont want to end up getting my legs stuck in that position for when I land. I dont know if im being overly scared though, how bad is it if you land with your legs crossed leg that? ive been thinking that ill blow out my knees and break my legs for sure if i land like that, or else definately do something pretty nasty to my legs. Has anybody ever not managed to get their legs back around? how bad is it?