Just some speculations and observations.
First of all I hope the bald man is not the jockey. That would be lame. Please make the jockey a mysterious extraterrestrial and not a man. If it is a man, I'll be almost as dissapointed as I was when I watched CONTACT's ending.
With that said in the red circle in this picture, is that a person hiding in the sarcophagus or a film crew member?
In the yellow circle. Is that possibly a space jockey mask with the trunk sticking up in the air? As if when someone or thing sits in the chair it flips down over the user's face?
In the green circle, just a wild thought. What if the jockeys are in these sarcophagus/cryo chambers and jettisoned into the jockey chair and ready to fly the ship?
In the purple circle. Is that a head under that glass looking dome and is it a creature in a cryo chamber, possibly a jockey?