Paul – Hi, sorry to hear about your clutch trobles. I think your clutch disc may have failed and some loose bits are now locking it to the flywheel. A second possibility is the pressure plate has failed – the diaphram spring can fatique and the fingers can crack, so the pressure plate continues to clamp the clutch disc even with the clutch pedal pushed to the floor. I’ve had both types of failures on different cars. Unfortunately I think you’re going to have to pull the transmission to replace the clutch. The good news is the parts are readily available.
Gary