They really blew it. If they had inserted just one gratuitous frontal nude scene with Brooklyn Decker, they would have guarenteed many repeat viewings and had the highest grossing movie of the year.
She's young and just breaking into the movies - this was the time to gently tell her to "take one for the team" (and give her a small cut of the gross as a reward). Otherwise, why even bother to cast her in the first place? Stunt casting needs to pay off somehow.