Before the basically non-existent Social Gathering happened, I was fooling around on Exodus. I figured out that if you go to activate the Elevator, while you have to defend hordes of Covenant, if you go off into the side exit, you can get out of the map. This side exit is the one where you see Phantoms land. But this only works if you still have sprint. Do not get armor lock.
Here is a video of this on my fileshare. If anyone could render it, it would be fantastic.It's hard to explain without a video, but here's what you do: Facing back where you first fight brutes, you jump on the railing. You then turn left while still on the railing, basically pointing at the first phantom with three Brutes in it. Right as the railing changes direction, fall down onto the table below. You will be given a 10 second death barrier, so quickly sprint down the stairs and jump over another railing. You should hit an invisible wall, which should slow your descent so you don't fall to your death. Right when the counter gives you 1 second to live, you should hit the ground below you. The counter will stop.
There is not much to do on this platform, as there are barriers right in front of you, but turn around, and you should see a cliff. Below are cables used to transport resources. There is a fog, so you cannot see the bottom of this mechanical canyon. You will surely die if you jump. But jump anyway. You will fall a bit, then start floating. Now there isn't much to do here, because there is a barrier a bit farther, but there is a resource box which might just be where a BOB spawns. It is physical, which is very strange, because it is way below you. There are many other grooves and strange places, the BOB could be there as well.
Monx and I went over to this canyon yesterday. While floating above the fog, I killed Monx. His body fell and quickly disappeared in the fog. We then both agreed to play ODST, so I opened my disk drive. This immideiatly forced me to exit the match/game, so to Monx's perspective, while still in the game, my body died. Since Monx was viewing the third person of my body, he was able to see it fall through the fog. Then he saw something. I don't really know what, he said maybe a light, or something. Monx will provide a better explanation for this. Could there be something beneath the fog?