We (my Honey and I) are starting to think that the Others are Dharma people who have said "Forget this!" and now are trying to take the whole thing down.
Hoax-Henry did tell Locke that he never pushed the button and nothing happened. He may have done it to plant that seed in Locke's head, to stop pushing it. I think that look was calm self- satifaction at knowing, that hatch was history.

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Hope is a very dangerous thing to lose. - Sayid

I do what my Rice Krispies tell me to. - Anonymous