xhonzi said:

So, my friend is pretty adamant that the MIB 'unleashed' the Smoke Monster and that smokey then took the form of MIB (similar to how he has now taken the form of Locke). I took it the other way, that he went into the Magic Yellow Light, and Mr. Manhattan style was transfigured into the smoke monster. And that he was separated from his physical body.

I took it as Gold Light=Smoke Monster and MiB going in let it out, so that like Locke, MiB is dead and Smoke Monster took his shape.

My wife disagreed and was of the MiB=Smoke Monster camp, and that the light went away after it transmogrified MiB.

Smoke/Locke DID say he had a crazy mother, so that's evidence for the MiB=Smoke Monster theory.