Are you saying the subsequent shots shows the fire lower down the rig, blocked by the house? Could be ...
Look at this link, then go to the first fire picture, the one early in the fire when the drilling derrick is still standing. It is one of the clearest early fire pictures I have found. See if this doesn’t help show the fire did not start in the control house.
http://www.ritholtz.com/blog/2010/04/deepwater-horizon/