Ken
Have you tried coat hanger wire down the side of the window? Call Pop-A-Lock? call the local cops? A clip holds door handle and window cranks on you push inner door panel in and it slides to side kind of a C shape. Screw the arm rest off and metal top and the door panel is held on with clips that will pop off with screw driver, at least that is how my 56 46R is and yours should be the same. Tony 56R is Super 2 dr ht 46R is Special 2dr ht rag top would have a C instead of the R. Ken before you go to all the disassembly try holding the door button in and push door in then pull out my 65 GMC has door adjusted to tight and I have to do this on passenger door some times one day I'll get off my lazy &$$ and adjust it.LOL