How is the passenger-side internal rear door panel removed? I need to 'unstick' the external door handle.

If it's under warranty, bring it to your dealer... I had a similar problem... Some parts in the mechanism had broken, so they were replaced under warranty...

Thank you for the reply (to Wee Smurf). Unfortunately, the car is no longer under warranty and I wondered if I could do the repair myself. I have unscrewed the two screws situated at the bottom of the panel but it still seems reluctant to come loose itself.