Maybe a guru will have a way to bypass the compressor, but short of that the A/C needs to be freed up. I can only speak in general terms... The A/C problem is that the bearing in the clutch has seized. (If the compressor seizes, the pulley still turns freely when the A/C clutch is not engaged.) Usually the bearing is considered an integral part of the clutch. Even when it is separate the rest of the clutch is too old to keep - sad experience there. The good news is that replacing the clutch is usually affordable (depends a lot on accessibility) and does not involve messing with the refrigerant. If the compressor is accessible and there is enough room in front of the clutch, it may be a DIY job if you are up to it. Clutch removal typically takes a special but inexpensive tool, while it normally just bolts back on.
Good luck!
Mike
See if the parts store can look up a belt for your vehicle w/out A/C.
IIRC, NAPA sells an idler pulley that replaces the a/c compressor and uses a standard belt for the engine. The problem you descrobe suggest a seized pulley bearing. If the pulley bearing is not seized, you should be able to pull the electrical connector at the clutch. If it then turns freely, it is the compressor seized. You can leave it disconnected but your defroster won't be worth much since they depend on the a/c to dehunidify.
Lugnut
BIG Thanks Michael Pardee, Sleepdog & Lugnut the input is really helpful.
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