Many apologies if this has been said before, which it probably has.
Mikhail said in D.O.C. that he had already died once that week...what if he really was dead, but the Island's healing "powers" brought him back to life?
Which leads to the question - why did all the other characters die, then? I'm thinking maybe because their bodies weren't left alone for all the time it took to "heal." Instead, they bury them only a few hours after their death.
I don't know if I buy into this. I'm not into a whole "zombie" theory at all, unless all the characters that have died really never WERE dead, which I don't think is true because on the podcasts, C&D are quite famous for saying things like "You stay dead on the island" and things like "Yes, so-and-so is dead."
But I dunno, maybe they purposely left in a little loop-hole.
And if no one has ever really died, that means they've woken up in the ground Nikki and Paulo style. Ick.