Board Thread:Naruto Discussions/@comment-945885-20140820060530/@comment-2120712-20140820145949

I do not think she is gonna be successfully sealed. She will either negate the seal from activating, stopping while it is sealing her, or break out of the seal. I think it will be in part to Black Zetsu. He will no doubt in his travels and observing the shinobi world for so long found a way to counteract the yin and yang seals.

Then cue in the Hokages, I think Hagoromo will know somewhere in his mind that the seal may not work a second time and is using the Hokage for plan B.