lol? Myoujinmoun that restrained V2 Juubi pins all 6 Bijuu while Flower World + a finishing move takes out Obito. The Jins are then promptly put too sleep via Kakuan Nitten Suishu.
SM isn't even needed since he can overpower and absorb the chakra of every single Jin via Mokuryu and take Obito out with FTW.
Hashirama would take this even if BM wasn't restricted. Myoujinmon pins them, Flower World takes Obito out, and Kakuan Nitten Suishu puts the Bijuu to sleep.