One of the 'Sand people clothing' objects has gotten corrupted.

It wont stack with the others that have come up in the game. It can also not be discarded.

I think it happened when I moved a character wearing it back to the ship using the map screen, and then recalled them while inside Anchorhead.

Normally, you can't equip 'Sand people clothing' in anchorhead, and it automatically unequips when you enter, but not when I brought a character already wearing through the map screen.

Is there any program that edits the items in the equipment pool of savegames that I could use to remove this rouge item?

KotOR Savegame Editor might help. You can find more info here (http://www.lucasforums.com/showthread.php?s=&threadid=123671)