I agree, his story made no sense and it took him a while to land on an explanation that made scientific sense (Otomax). My own speculation is that it was more likely to have been caused by a joint injection administered too close to race day, and clearance could have been inhibited by the Otomax. But that is speculation, I have no facts in that regard. Regardless, if the standard is to disqualify for any amount found, then the split sample will confirm the truth. And if the split sample doesn't, then there is something seriously wrong with the chain of custody of samples, which could really explode the entire story.