I swear some skiers do that on purpose to us riders. Last season at PK, I was on the quarter mile tail pressing and was bent down to grab the tail when this skier flew by and knocked me around a little. The run was practically empty and I was all the way on the right. I yelled at him at the bottom and he completely ignored me. Heard him speaking German to his wife. I yelled at him again up top and still didn't acknowledge me. He did nudge me again while I was strapping in though so definitely on purpose.
I almost lost it.