"When we started off I didn’t feel too bad, then at the bottom of the Turchino, as we were fighting for position, I got three spokes ripped out of my wheel," he explained to gazzetta.it in a video interview.
"I had to do a wheel change at the bottom of the Turchino. I chased and right at the top I got back to the peloton but then there was a crash in the peloton on the tunnel. I started the descent and normally I'm a good descender. The peloton was in ten groups down the descent and I went through all the groups, boom, boom, boom, and into the second group but I think there was already 40 up the road."
http://www.cyclingnews.com/news/cavendish-describes-incident-packed-milan-san-remo