After seeing how the 91 VA cut grows and seeing how Original Diesel grows I think they're right, Sour was 91 Chem x DNL as opposed to Original Diesel x DNL. Original Diesel doesn't have the little turned down single blade leaflets that appear between the calyxes that both the 91 and Sour have. And JJ acknowledges that the sativa traits of the Sour most likely come from DNL and that Weasel was growing DNL in the same room as the 91.
Peace
Peace