We will never Know. As it stands it's very likely he was doping If the B test fails too I think we can say with reasonable certainty that he was. If you are seriously opposed to doping(and I assume you are since you refer to it as cheating) and want to eliminate it then you should be in favor of weakening the standards required to deem someone guilty rather then strengthening them. A rent-a-docs note should not be enough to excuse a rider. Look at how many people in Operation Puerto had never failed a test. Even if some of them where only mistakes I think its safe to say that testing provides alot more false negatives then positives.