My mechanic, Nelson, and his son, Mike spent a few hours trying to figure out what to do. They finally decided
to try chemicals to free the plate from the flywheel. We had already removed all the panels to get to the top of the bell housing and the inspection port there.
They decided to use lye to free the pressure plate. They mixed a moderate amount of household lye and a bucket of water. which was poured into the inspection port and we waited. Still stuck. They drained the lye mixture into a bucket.
The next day they came back and poured the same mixture back into the inspection port and left for a couple of hours.
When they came back they drained the lye mixture from the housing and tried it out. It worked and the Rover could be shifted and the Rover was driveable.
George in Auburn CA -- 2002 Discovery SD