Hmmmm...I doubt they were tortured. The Fallen were trying to break in remember? That would mean that those doors hadn't been opened for decades. Those guys were probably a research crew that opted to stay behind and finish off some data destruction or something. Why do they have no hands or feet? Well...a 3D model that was gimped to reduce polygon count more than likely. Either that or they all went crazy and one of them cut off the hands and feet of his fellow researchers and left them to die, then did it to himself. Now that I think about it, how the f*ck did Grayliks get in there and come out the door that he does? There was only one entrance...maybe they did the cralling around vents shit from the first level that was supposed to happen throughout the whole game...