I wanted to bring this up and see if anyone had ideas. Back in season 1 (or 2, I can't remember), Jack finally finds his father's coffin... but Christian is not in it. Later we see Christain in the cabin, and then on the frieghter when he talks to Michael, etc.
My question is that if Jacob's Nemesis took over Locke's body (similar to what is theoried to have happened to Christian), why is his body still in that crate, in ADDITION to walking around as Flocke? I think this might ruin that theory that Christian was the Nemesis in disguise this whole time. It may be possible that Christian is the real Christian, and he is just part of the game that is going on?