I was applying a considerable amount of force and was not getting anywhere and I was afraid it was going to suddenly release and the resulting jerk would break something else. I noticed that all I was trying to do is get a plastic tap to go past a metal plate. There was plenty of room with no other components around so I stuck a medium screw driver behind the plastic latch and applied a small amount of pressure and it unlatched very nicely. I pried on one side and then the other to release it on both sides. For me this method worked a lot better.