I agree was that even canon though? I know asuma did something like it as well but it was not wood it was just like magic arms. lol
Speaking of which I think the 1st Hokage made a mistake when he summoned this thousand arm thing. He should have summoned it facing the other direction and just make it fall or roll onto it's back instantly smushing the kyubi to death.
And I'm sad to also add this detail but I want to see it break dance for some reason now!...No I take that back I'm not sad at all, the more I think about it I realize just how awesome that would be!!