Removing Gen 1Montero Exterior Handle
 

I am trying to remove the exterior door handles from my 1990 Montero. I have released the clips and pulled up the two bars free. I have also taken out the bolts holding the handle to the door. However I can’t figure out how to release the piece circled in the photo. This pic is the passenger rear door. Can anyone help me with this? Thanks in advance for any suggestions.
https://cimg7.ibsrv.net/gimg/mitsubi...6bdf5ffb0.jpeg