Yeah, gonna have to find a way to get that back panel off, not sure how easy it will be, I'll take a look at mine tomorrow and see if there is anyway to get it off with it shut. The rear passenger door probably has a broken latch, which isn't any fun to get out either, when my driver side door latch broke, I got the panel off and spent a few hours with a dremel cutting the latch apart enough that it would come out.
1993 Grand Cherokee Limited, 5.2L
Modified/Slightly Ported Kegger
Air hat spacer
Modified Throttle body