While attempting to adjust my idle rpms, i over torqued the idle control bolt on my 82 - 300SD and accidentally broke the metal that the screw mounted to, is there any hope of repair? any way of bypassing this? anything i can do!? currently, the car will start but the moment the throttle linkage is moved it lockes up and stops the engine (as if someone physically pressed the stop portion of it)

Here is a picture of the metal fixture i am speaking of:
In the red circle of the second picture, i dont have my digital camera with me




Here is what remains of where the screw goes into, no camera so i drew it