Joke. Luckily there wasn't anyone seriously injured!
4.30pm: It's being reported that upwards of 30 tacks have been found on the road back near the summit of the climb where all those riders punctured. One rider has been forced to abandon the tour after crashing in the wake of his puncture. I think it was Robert Kiserlovski.
(From the Guardian's live updates)
Unfortunately there was.
Cunts.