Got a bit of extra theory to add to that greeb hunt, the whole greeb plus its frame looks like it fits into the cut out section of this large circuitboard on the wall. There's several of these large boards around, in the medical bay, etc-etc, so would account for the number of greeblie parts.
http://ladymanson.com/galleries/movies/MoviesRS/albums/10022011/StarWars2/4/swempire_1064.jpg
http://ladymanson.com/galleries/movies/MoviesRS/albums/10022011/StarWars2/4/swempire_1073.jpg
In this scene the circuit boards start off partially covered up, then uncovered, then covered again - lol!
I've not had much chance to search since Xmas, grrr, but slowly getting back in to the swing of things.