Hi Stephen,
I'm assuming the problem is on the differential side, not the hub side, right? If that's the case, just give Frank at the DSS a call and explain the situation, he'll more than likely send up just the outer CV joint to replace yours. No sense in fighting with it for now.
Frank is a good guy and is easy to deal with.
At lease you found out that the problem follows the shaft, which means it's not the diff that's causing the problem.