mbdoc's advice is well repected on this board. But I need clarification with the connection between compressor function and how it affects the clutch. Both share the same shaft - nothing else. How can the insides of the compressor affect the clutch? Is is because compressor seizure puts too much strain and wear from slippage on the clutch?

The OP's situation is clutch slippage when a/c is not called for. How does the condition of the compressor factor into this?