Passenger Door Won't Open

[Turnby]

I have a 2006 T Spirit where the offside rear passenger door will not open.

The locking latch is stuck in the ‘locked’ position and will spring into back if I put it into the unlocked position. Holding it in the unlocked position and using the inside and/or outside handle will no open the door. When locking all door either from the fob or drivers interior switch I can hear all the doors actuators but this one the latch only twitches.

When starting the car the locks all make s sound as if trying to lock/unlock which didn't happen before.

So how can I remove the door panel with the door closed? I have removed the only two screws I can see (behind interior handle and armrest on the door panel)