It's a bit odd that we have seen a couple of bodies that have been there for a while. Adam and Eve in the cave and the two from the drug plane. Why would Yemi's body go missing? Obviously Smokey can pick things up (Eko trees ect.) so I'm inclined to think it's Smokey.
Long shot here. Maybe Smokey used whatever DNA was left to become the solid image of Yemi. It also makes me rethink first season when Jack went looking for his father and flipped out about the empty coffin. He did follow what he thought was his dad out there. They have yet to tell us for sure that he did or didn't manage to get him on the plane. Was Smokey responible for that too. Oops! I was going to answer the question and I gave myself a buch more to ponder. My head hurts.
