I, for whatever strange reason, keep seeing people that thinks of the kage's possibilities of breaking the summoning contract with their summoner, thus gaining free will. Like since Tobirama created the jutsu, he should know how to do it.
I am certain that Tobirama knows how to do this, but once this "talisman" is placed inside the summoned zombie shinobi, he is under the users control. Please do recall that, when edo tensei was released, Madara could move/do anything with his own free will. Thus he could break the contract with the summoner, and thus avoid having his soul released from the body. U_U
Shortly, you cannot use a jutsu to break the contract, when you are not allowed to move on your own. I am certain a command was set in every summoned shinobi, so he would be unable to do this. Else Madara had just done it from the start.
Hope this can help some confused souls.
I am certain that Tobirama knows how to do this, but once this "talisman" is placed inside the summoned zombie shinobi, he is under the users control. Please do recall that, when edo tensei was released, Madara could move/do anything with his own free will. Thus he could break the contract with the summoner, and thus avoid having his soul released from the body. U_U
Shortly, you cannot use a jutsu to break the contract, when you are not allowed to move on your own. I am certain a command was set in every summoned shinobi, so he would be unable to do this. Else Madara had just done it from the start.
Hope this can help some confused souls.