Evans played it perfectly. He had no choice but to chase himself when all the other couldn't (Voeckler, Sanchez, Contador) or wouldn't (Frank, Basso). Letting Andy go was a gamble, but not unreasonable in hindsight.
He doesn't give a shit about L'Alpe d'Huez (well, he probably does, but he doesn't have the legs to win it), the only thing he has to do tomorrow is not let Andy go and avoid losing more than a minute to Frank, then pull back the minute he's down on Andy in the TT. Easier said than done, he thought he could do it in 2008 too... But he's one of the winners of today's stage.