Broken Trimark RV door lock (06-650)

Thanks for all the info so far. From the inside of the coach, the door lock has the striker side/latch assembly side pinched between the door and the screen door/door jamb. There is no way to get a screwdriver in there to force the spring loaded watch back. I do have a schematic of the lock from Trimark and the new replacement 1650 lock but neither tells the whole story. I have currently drilled about 20 1/4th inch holes in a circle from the inside of the lock and created 1 fairly large hole so I can now see inside of the lock. It appears that if I drill a couple more holes near the spring behind the latch, remove the spring, I should be able to use an awl/screwdriver to move the latch inward and out of the way.