Why Is Locke off the Island?

With the Lost Season 4 Finale shocker of an ending, I can’t get the image of Locke in a coffin out of my head! But the question still stands .. why in the world was Locke OFF the island? Could it be that he needed to move the island himself or was he looking for the Oceanic Six to bring them back? Vote in our poll below.

Image used with permission from Newscom