Well, you don't get much clearer than the line "I spoke with God. He told me to send us all to hell!"
I thought he said heaven.
Isn't computer boy all screwed up from messing up the trajectory. I'm pretty sure from that point on, everyone's on edge about their ability to survive. I can't really say anything to you disliking the shaky handheld perspective. It's one of those things: It isn't wrong, but neither is you having a preference against it.
Yes he's screwed up, be we hardly see him after the captain dies. He's just gone, then he kills himself. I would agree that everyone's on edge, but I don't think I go so far as to say they've gone mentally unstable. Though I'm not sure if that even matters.
Anways, every performance but Cillian Murphy's I had some problems with. Mostly they were just trying to make every line stick out and sound profound, but just sounded odd and out of place. And while I agree that every film has an aspect of unbelieveability, they all create a situation were the viewer suspends his belief. I didn't get that during the film. I kept going "What? The space ship can talk to them, but this is happening?"
I think the shaky camera can be a flaw and it was in this film. If I cannot tell what's going on, on the screen then it's a problem.