Here is an article in MSN Entertainment, an interview with Jiffy...located here. I am particularly interested in this tidbit...
There is no scripting at all, as you will see in episode one in this season, in which you have something happen that's never happened before. First challenge out of the gate, and we have drama.
What immediately came to my mind was....KOURTNEY is going to break her arm in the challenge. She is going to bounce on those nets, and get bounced off to the ground where she will land on her butt, and fall back on her wrists, and get a typical Colles fracture. Kourtney breaking her arm in the first challenge would indeed be something that has never happened before and it would indeed cause drama!
The more we approach the game, the more I am inclined to think this accident occurs in episode 1.