Ok finally its fixed, note, dont repair cameras late at night and when your wired only on caffeine... The write up follows below for whoever may need help with this in the future.
Part CE564800 was the retaining ring that needed to be removed, which I outlined before in green. I dont know why I was trying to remove part CE564500 with the spanner, it was a brain fart, as the holes for the bearings looked like it would fit a spanner. Doh...
I followed shutterfingers's advice and used a bit a solvent, I used naphtha instead as I was weary of acetone coming into contact with the circuits and plastic board under the cover. Just a squirt around the gap outside that lever nut and I let it sit a bit, and with a spanner it loosened up. Finally the top could be removed as I had everything else off.
With the top off you have to be very gentle as its connected to a circuit ribbon and two other wires. But with it all turned slightly, it was enough space for me to diagnose what was up with the film door latch release.
The rewind column, part CE596700 has a small flange/collar at the base, when lifted that flange contacts part CE565400, a circular collar that is supposed to connect with part ZC452000 the locking door latch. What keeps it all locked down with pressure is spring part number CE557200.
So when the camera dropped, it jarred part ZC452000 out so that it was resting below part CE565400, so when you pulled up on the rewind column (part CS596700) there was nothing to catch to pull up the door lock (part ZC452000).
So the correct order is ZC452000, which rests on CE565400, which is ultimately pulled up by CS596700 which opens the door. I had to peel back the leatherette to get access to part CE558000 which actually keeps the door lock in place so I could take it out and rearrange it. note: there are two tiny washers (under CE558000) part CA871900, make sure you dont lose them.
Other notes:
Part CE59400 is just a plastic cap that is glued onto the top of the wind lever, just pry it off with an exacto.
Under that, when you remove the wind lever are two very tiny ball bearings, Part B 1/16, very easy to lose
Set the dipoter correction to 0, or centered before removing the screw that holds it in place, it will make it easier later on reassembly.
When removing the dials for film speed and exposure compensation, there is a tiny little brass pin and even tinnier spring, parts CE568600, CE568700, move them with tweezers and keep them safe.
Make note of your filmspeed, and zero out your exposure compensation before removing dials, as you have to align 3 white plastic prongs Part CE596100 through the top plate when closing it all up. This was a headache, just getting everything in line so the top could slide down and the dials function. the exacto knife helped with final positioning.
The film rewind button, part CE561200 and spring part CE561300 should also be removed when working as they are small and easy to lose, when you put the top plate back you must align them with the cutout to fit, depressing the button helps it sit better when doing this.
Dont over tighten Part CE568300, which is the locking ring for the film speed and exposure compensation dials, if you do it will actually turn the compensation dial a bit and create an off centered mark alignment.
Dont forget parts CE568600, and its spring, that gives the film speed dial its clicking sound. I forgot this in my sleepiness and had to take it apart to redo.
Thats about it, I swapped the broken flip out rewind top part ZJ185600 with another working body I dont use as often and all is now fixed up and ready to shoot. I checked the meter , dials, and button functions with a new set of SR44 batteries and everything works. I can finally take a nap now. whew.
Also if anyone has a spare part ZJ185600 (the flip out rewind lever) I could use a replacement! =]
Those green circles indicate the plastic prongs that you have to align and thread through the top place when reassembling the camera. My bottom prong seems to have broken off slightly but doesnt affect the camera, I never found the broken off part in the camera housing.
you can see the rewind button and spring just sits in a wobbly state, when you depress it, it sits flatter and is easier to reassemble.
I was working on a soft padded mat, its designed for instrument and gun cleaning, and helps keep everything visible and stuff like bearings from bouncing around. each section of parts that was disassembled went into its own holding cup.
