If the clutch is gone, it most likely broke away when the compressor locked up. Most likely did blow oil and junk into the system. You should remove the filter/drier, flush the system and lines, add the correct amount of PAG oil to each component, install new drier, install new compressor and evacuate/recharge the system.
Edit: there is a sight glass located on the frame of the car below the power steering reservoir. It should be clear (or have a greenish hue if UV dye has ever been added) but if its black, there's one sign that it has suffered a "black death"