Thanks I got it open. Lots of WD-40 through the back latch, and pried open the cover inside the door and let fly with the WD with extension tube. Thanks everyone!

The rear door on my 99 Disco Series I stopped opening. The lock mechanism works, and the inner and outer handles seem to move fine. I thought maybe it was the cold, but I parked in a heated garage for 8 hours and that didn't do anything. Ideas?