In this week's producers' podcast they say "it appears Locke blew up the sub." So there is not a diffinitive yes or no... yet. We are left to decide if "appears" means the sub is gone - so he blew it up, or that "appears" means just because we can't see it doesn't mean it's been blown up. Argh!!!!

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`Dear, dear! How queer everything is to-day! And yesterday things went on just as usual. I wonder if I've been changed in the night? Let me think: was I the same when I got up this morning? I almost think I can remember feeling a little different. But if I'm not the same, the next question is, Who in the world am I? Ah, that's the great puzzle!'

-- Alice, from “Alice’s Adventure’s in Wonderland”