Sorry for reviving a super old topic, but I found it in this vid, since the previous one is dead.
Start at around 2:17 or 2:18 and pause when they disappear into the curtain.
Can anyone get a better, see-able quality screenshot of this from somewhere? If someone has the game and can do it, that'd be awesome. I only own Power Stone 2, and she doesn't have this move. They simplified all the characters' moves for the sake of 4-player mayhem.