I don't have many double-sided discs (maybe 20), but with all of the ones I have I put the widescreen label UP if I want to watch widescreen (meaning the actual widescreen recording is on the opposite side, facing down). This is by design. If any of yours are different (i.e widescreen label on the same side as widescreen data) then I think it's a manufacturing mistake.
l2c
P.S. Awesome movie though--one of my favorites.