I was at the Filmore for a few laps. Man I have no idea how they were doing it. That discovery guy was pretty strong, but a lap before last on that part of the course he just couldn't power throught that wall anymore. He started to weave back and forth. On the last lap he was absorbed back in to a chase group.
On a side note I think most of the riders had 32 at the back, but I did something smaller on one of the riders bike. That must have really sucked for him.