I tried to get in to the hinge pocket through your suggested access under the dash (circled in red in the photo). Unfortunately it only led to inside the hinge pocket. My issue is just behind the hinge pocket where the pin has risen up and prevents the hinge from sliding forward and out. Thanks anyway for the suggestion.
HMM? From what I can tell, you should be able to reach up to the top of the hinge pocket (the part that's attached to the body) and access the pin. It would definitely take an offset tool of some sort. Or maybe remove some of the sheet metal just above the dash attachment bracket to reach the pin. But you still may not be able to push it back down. I was going to stick the hinge back in my body to check the access, but the rotisserie is bolted to the hinge attachment and is in the way.
Maybe cutting a hole for torch access on the interior would be less of an issue, cosmetically.
