i can kiss u man but iam not gay but thanks i like ur theoryOrochimaru is alive in two fronts, body and soul. His body/part of his being is being resserected inside Kabuto. Kabuto stated Oro is already trying to take over his body.
The second Oro being alive is his soul/mind which is trapped in Sussanoo's genjutsu forever/whenever he is let go. Oro took over Sasuke's body, but was repelled at the last moment. It's the same as if Oro took over a previous body of his and the body's owner kept control, Sasuke pushed Oro's mind/soul back as Oro did to his previous bodies.
I would LOVE to see due to this split in his being physical form/soul/mind that he turned back to how he was in the old days, a good person....would'nt it be something if it happend and he helped save KonohaAnyways eventoully the two parts will want to come whole again and Kabutomaru will search for Sasuke, who holds the key to Sussannoo
props for real