Corrected entry: At the end of the movie, as Batman plummets to save Robin, the ropes around Robin's wrists change length! At first they're short and his wrists are within just a few inches of each other, and then the ropes are much longer, long enough in fact to allow him to swing his hands under his feet and above his head with no problem!
virtual-toast
27th Aug 2001
Correction: As Robin is falling, there is a shot that shows him managing to loosen the ropes enough to get his wrists under his feet. He then stomps on the rope bridging the gap between his wrists to loosen it even further, allowing him to bring his arms above his head and also giving Batman something to grab onto. It requires a little suspension of disbelief, sure, but it generally works.
virtual-toast