Even if the *bungie employee* was lying the intro cutscene is too generic and i do believe there is truth to the story he/she told. Why would an awoken be in the piles of dead humans fleeing to the city during the fall when they were born of the darkness in space? Bungie arn't that sloppy when it comes to story telling which is why it seems like a rush job to me, there's definitely more to this story.