Today at Westlake, my front tire exploded as I entered turn three (commonly referred to as the "cop turn") at around 30 mph sitting third or fourth wheel, somewhere around lap 5. Knowing that we were lined out and that the corner was covered by the police officer, I straightened the bars and headed directly for the (very high) curb on the other side of the road. I managed to clear the curb with both wheels and coast into the grass, unscathed.
Wow, that was close. I guess my 2009 cyclocross season officially began today.
It turns out that a giant piece of glass punctured the tire and tube just the right way to cause it to instantly explode.
After walking a mile back to the car, I changed my wheel and re-entered the race, but was relegated to sitting at the back of the field and watching all of the fun go down at the front.
Kind of lame, but at least I didn't die.