Looks like that pesky PIR_185 thief armor was still causing some fits. (Thanks New_Civilian for reporting it!).
Whats wierd is that it looks ok when in a hand slot in the main battlescape view. If you switch to Inventory view, however, you get glitched out graphics.
Please dl this version and add it to your \user\mods\AltCorpseComplete\Resources\Corpses\BigObs folder, overwriting the previous version.