After having a very perturbing experience at a French border control some time ago, I do not trust the French. A suspicious coiled object was superimposed on an xray image of a jar of jam going through the security check. After sticking my hand in the jam and proving that there was no such object in the jar they let me pass. Thus although this may seem off subject - I would not be suprised if Landis' samples were spiked. If it came to Landis' word against the French Laboratory's I would bank on Landis.