On my full door, I had to resort to taking an angle cutter to the plate that the latch attaches to the side of the door, and cut it. Then, I was able to move the two latch cams out of the way, freeing the door. The reason mine would not open was, the spring that releases the cams off the striker pin broke. I didn't know this until I cut the plate off.
1992 Jeep "CJ9" (YJ with '78 CJ front clip, '80 CJ Tailgate, Custom CJ Dash with '76 CJ Gauges) AX-15 from a '93 YJ, 2.5" Rancho SL, 5/8" MORE booms, 1" BL, and 33"x10.50" SS TSL's