So Madara was able to release himself from the shackles of Kabuto's control by releasing himself with a single hand seal
So couldn't Tobirama just release himself from Orochimaru's control when he wanted to attack him. He had his conciseness unlike the previous time, and he obviously knew the only weakness to the Jutsu as he did create it. Also, considering Orochimaru is stuck in IT, it would be a perfect time to release him and the other Kages, just in case Orochimaru turns his back afterwards
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So couldn't Tobirama just release himself from Orochimaru's control when he wanted to attack him. He had his conciseness unlike the previous time, and he obviously knew the only weakness to the Jutsu as he did create it. Also, considering Orochimaru is stuck in IT, it would be a perfect time to release him and the other Kages, just in case Orochimaru turns his back afterwards