I don't know if that was it--at least, not the only thing. General's Joes had a report from someone who saw the test screening and said it was terrible. No character development, enormous plot holes, and various scenes and characters thrown together in a hodge podge of senseless sequencing. The returns probably came back negative, and the studio figured it would be better to try and fix it than to let it tank. Or, at very least, to enhance it with 3D to make sure that most of the people who only see it once will pay a $5 premium to see the piece of ****.