At thiiwh point, given Froome's unfortunate string of rare medical conditions, I fully expect a small critter to come bursting out of his chest,doing great damage, but miraculously he goes on to winning the tour. The probabilities probably compute to around the same as his medical history.
Then again, Big Bird came out a few years ago.
Edit: From reading a bit of the scientific literature, that Froome had just enough renal failure to cause a poor performance on Stage 17 and Salbutamol to concentrate in his urine - which would mean he didn't take a piss for a long time - and remain that way while blasting stage 18 is ludicrous considering general renal failure symptoms and treatments such as collapse, hospitalization, dialysis, etc. If he managed to come back from this in one stage I want some of that good stuff.
Oscar's razor is that he freaked over feeling shiite on stage 17 and either overdid his PEDS on stage 18 or screwed up his dose, or it was screwed up on him. Who was in the sky car ?