http://image.prntscr.com/image/d97b271765a041b3b1abad21a5a283ea.png
Sage naruto use mystery at start, chaining into mei immobilize. Immobilize got reflected onto naruto's clone by ningendo. During naruto's standard attack, he spawned a second clone instead of attacking. Both clones are on the field at once.
This is not the first time funny things happen with reflected immobilize from mei's chase.
http://forum.naruto.oasgames.com/en/forum.php?mod=viewthread&tid=18600
That issue still hasn't gotten a response from mods.