Since I haven't a clue about which compressor since I don't know which car, I can't say much about technique.
Does the locked up clutch unlock when you turn the A/C off. If so then your question is academic as your real problem is the compressor itself. If the clutch doesn't disengage and the clutch has to be replaced they can be removed without discharging if you have the tools and its the right model.
Bosch Master, ASE Master, L1
33 years MB technician