It looks like Nathan Rennie has been digging thru the archives, and he's posted up a treasure trove of DH racing clips and interviews on his YouTube channel. This one is from the 2006 World Championships, and features a cast of legendary riders including Sam Hill, Chris Kovarik, Steve Peat, and Rennie himself.
After winning qualifying, Renny was on a mission, but a log was rolled directly into his path mid run (you can see it at 10:40, and again in slo-mo at the end of the video). He ended up finishing third, but the incident still raises the "What if?" question.