Mine did the same thing, and it ended up being the linkage getting out of adjustment. Just crawl in the cargo area with tools and take the panel off, you should be able to get to all the screws on the plastic piece. Then there is another panel to get through, but that is far easier. Then pull on the linkage toward the center (it is just like a pickup) and voila! Little bit of grease and adjusting the rods is all you need for trouble free operation from then on.
---------- Post added at 05:57 PM ---------- Previous post was at 05:55 PM ----------
I think, if you have a decent size screwdriver, you can use it to manually move the latches themselves by prying them while someone else pulls on the handle.