Den, if you try a search there have been a number of threads with ideas on this. The clutch friction plate is stuck to the flywheel and/or the pressure plate. The first thing seems to be to run the engine to get it hot and let the heat soak into the clutch plate, probably for 1/2 hour +. This might free it. Other methods involve large trees and towing, but sound more hazardous. I have done it on other cars by being towed to the top a hill and rolling down, putting it into gear and jolting it free.
Alan
Saab 9000 Stg 1
Saab 9000 2.3 FPT Auto
'81 TR7 DHC
