"WADA’s Prohibited List provides that: “The presence in urine of salbutamol in excess of 1000 ng/mL or formoterol in excess of 40 ng/mL is presumed not to be an intended therapeutic use of the substance and will be considered as an Adverse Analytical Finding (AAF) unless the Athlete proves, through a controlled pharmacokinetic study, that the abnormal result was the consequence of the use of the therapeutic dose (by inhalation) up to the maximum dose indicated above.”
So the burden of proof now lies with Froome. Of course he/Sky will come up with all kinds of theories to try and explain these results, but proving these theories for something that occured several months ago now will be nigh on impossible.
About as likely as it was that Contador would ever have been able to prove that steak was responsible for the Clenbuterol in his system.
Will be very interesting to see how this plays out now, either way it will tell us an awful lot about the system