That bike is lugged carbon:



A rider crashed and slid down in front of Shelly Evans (USA) who then did a front flip over the aforementioned rider. Shelly came off of the bike and the BMC flew up into the air and back down, that's when it snapped. For those wondering if you can get out of clipless pedals in a pinch. She did. Nowhere to go but down, but she got out of them.

She survived and came back the two days later and did well in the points race.