It actually looks like 5 of 6 blew up according to Doug Hayashi on
www.pulpracing.com. The 6th being basically "stockish".
Doug actually is a really funny guy, and writes some great stuff.
If you want a day by day account of the chaos that is OTC, check out the pulp stories section on his web site. I'd tell you who won OTC, but that would ruin it...