that sort of crap in the clip make me furious. That dude doing the jump was doing every thing right, and he had a really steezy jump and landed to find a moron crossing at the bottom of a hit. Luckily at most of the parks i frequent it is roped off or separated from the other runs so idiots cant cut across the run into the park. If you are going to go horizontal across a trail look up and see if there is anything comming at you. You would do the same thing if you were cutting across traffic in a car, so apply some common sense to the hill.
The sad part is that this jump section is roped off. People just don't think before they do things on the hill. It's like everyone's common sense just dispersal.