Madara has an accomplice, and that's Tobi. And Tobi? I think he's a part of Madara also, imagine the Kyuubi detected Madara's Charkra Signature when Tobi released it from Kushina using a Sharingan. I think there's a Class "S", "Sage of the Six Paths" or "Senju/Uchiha Accesible" jutsu involved here xD. Just a thought, like a Soul/Personality Split Jutsu? Truth and Lie, Madara and Tobi, but the same goal. (Read through "Kabuto-Madara Conversations" in 562). And Madara stored his own body in a secret and highly access-protected Uchiha Box for future use. A well thought-out plan I assume. . I'm hoping for speculations from y'all. xD. Maybe one of us will hit a right one in relevance to the Naruto story line.