Good news, the stolen video has been successfully removed. Dunno why I didn't think to do this in the first place, but god to know I can rely on that if all else fails.
Granted, their channel's still up, and plenty of other stolen animations haven't been taken down yet, so I can't say we've truly won until we get the channel taken down completely.
For now, though, let's just hope they, or anyone else, don't try to pull that stunt again.