Oh yeah, they set it up so you'd think Campbell was an AI, but then you destroy the AI and he keeps talking. Which, don't get me wrong, he wasn't the actual Campbell either, but I always took that to mean that he wasn't the AI either- he was something else. I think that was supposed to be a big twist, but so many people were so checked out by that point that it didn't scan that way, and then they went on to retcon the twist out entirely.