What if Locke were to die but comes to people who can see the 'dead' on the island. He may have a confrontation with Jack like the spoiler said, but Yemi had a little confrontation with Eko, wouldn't you agree?
I was totally shocked by Ben shooting Locke, but we should have seen it coming in the jeolous looks of Ben's bug eyes.
I'm really not sure if Locke lives, though I hope he does, he seems to important.