Anyone know what country this Kevin guy lives in? If it is some third world country then none of this matters he gets away with it. If it is USA then he is screwed since he admits he knew something was wrong and still attemtped to (steal) as much as he could before the the site was closed. Its like seeing someone rob a bank, drop some money on the ground while he ran away, then grabbed as much as he could before the cops came....
Kevin did not steal anything, he completed a trade. Unless he was the hacker, he did not steal anything. We are trying to establish exactly what BTCs are, but one thing is clear, they would not be subject to theft laws.