By doing what Valverde was accusing Sky of today, namely capitalising on others' misfortunes. For example, in stage 3 of this year's TdF, and in Paris - Nice. The difference being that unlike today, they didn't attack, and then continue the attack despite a crash happening, they saw a crash happening and then initiated attacks afterwards. There have been other examples, too, they and Europcar are the least popular teams in the peloton.

The sufferer in TdF stage 3 was Sky. So there's absolutely zero chance of Froome asking his team to slow down for Valverde.