Yeah, I remember reading (Leopard Gecko Manual) that a gecko was classified as a Tangerine if it had any Orange/Tangerine anterior to the tail base..
That book was written back in 1998, so with todays standards, that obviously wouldn't count. I'd classify the gecko in question a High Yellow Hypo, or a Hypo Golden, BUT I know some breeders that would have classified it as a High Yellow Hypo Tangerine (because of the orange on the tail base).
Just my two cents, but the way that the Manual describes the "original" tangerines, Dan was right, it could have been classified as a Hypo Tang.