Whahahaha.. to claim your prize? He never put that as requirement in the giveaway contest (plus, it's not possible to put such requirements to claiming or receiving anything you won). Therefore, don't send them back.. and have him submit a civil case against you, because you will win without a doubt. You can even show any judge this thread and they will fine his butt off.
Also, you can tell him I saved his videos. He even deleted the results video from YouTube. He has absolutely no leg to stand on.