No surprise Madara gets to stay! What's crazy about this was the way he did it. He apparently knows the steals to release the edo's contract with the summoner, and now hes free! Makes me wonder when Orochimaru first used the edo tensei to summon the first and 2nd hokage, why didn't the 2nd hokage used this release method as well? He is the creator of the justu and such. I know at the time he was fully controlled, but there were movements when he wasn't.