I think it was a given that James would kill Sawyer, I didnt think it would be Liea/Jabba style, but given all the other star wars references it shouldnt have been a surprise.
That was pretty brutal for TV.
Jack is a twat now, I dont know if he was brainwashed, or if the truth that he knows is that time passes faster off the island than on it.
Lets look at the facts.
TVs in the station are old, way old, the satalites station run by patchy, looked old tech, vacume tubes, way old, VW camper vans, way old.
Syied said the phone was more advanced than he had ever seen, but hes a techie, well up on the latest tech, therefor it suggests tech has moved on a lot in the "three months" they have been on the island.
Maybe when Desmond didnt enter the codes, the magnetic pulse did more than bring the plane down, maybe it split it on the quantum level, one crashed, and one went on to go down in bali.