I've got an 01 GMC Sierra with a tail gate lock that was installed by the previous owner. The linkage to open my tailgate has popped off and the only way to get to it is by removing the handle bezel, which is impossible with the lock in place. Note -there is a one way screw on the back side of the tailgate. How do I remove the tailgate handle lock? - Thanks
Below are some pictures of the tailgate handle, front and rear:

Below are some pictures of the tailgate handle, front and rear:
