Rear end issues

[spdbrake]

Yes it is sheared. The clue is the hang-nail thread where it snapped. Machine bolts and screws area chamfered 360 on the end to prevent cross threading. You also need to add the missing fender washer (large area washer under the head)
Your earlier pic:



which is also allowing the diff to shift aft due the two aft mount bolts being loose. You will have to drop the diff out of the car to extract the broken bolt.

While its out you might as well go in with Poly bushings
https://www.ecstuning.com/b-ecs-part...02447ecs04kt2/
https://www.ecstuning.com/b-ecs-part...02447ecs01kt1/
You don't have to go with ECS parts there are plenty of alternative brands for these items.

If your going to James Yale's shop let him advise you and procure the parts for you.
Nothing worse than bringing your box of parts to a shop and expecting them to assume all the risk. "Bringing your own eggs to Denny's" is the common term.

Another thing I'd ask James Yale while its in his shop is upgrading your front diff bolt to 14mm VS the stock 12mm
https://www.ecstuning.com/b-condor-s...me36diffbu~cd/