I have a feeling he was torn between a stage win and yellow and got greedy and wanted both.
nah…he wanted yellow. Stage win unimportant at this point, and he was in a break with Ciolek and Bennati so wouldn't have really expected the win had Ivanov not got away.
However, not only did he not get yellow, but they've now well and truly fecked up Cavendish's chances of Green. All over unless Thor crashes. Stupid move, spectacular FAIL.