Mars Express 'may' have imaged silent MGS
See http://www.livescience.com/blogs/2006/12/20/lost-mars-probe-possible-sighting/
any more details available?
My suspicion is that the cracked array arm actually physically broke
during that last day, so that the autopilot's attempt to turn to point the
array toward the sun (based on the known position of the array's arm)
failed because the array wasn't facing the way the arm indicated.