All Floyd has to do at this point is stay on the best climber's wheel on l'Alpe D'Huez and finish in the top 5, do the same thing up La Toussuire the next day, survive the mountains the next day without any big losses, put in a good time trial, and he's got this thing locked up.
He just might win this thing without winning a stage, which would suit his mentality pretty well.