You might spray some PB Blaster in the adjuster hole.
If the brakes are falling apart, that’s when spring break up, then the drums are probably worm too so it could be a fight to get it apart.
A couple of screw drivers on the outside of the drum and start tapping with a hammer, a dead blow hammer will help some.
Hit the outside of the drum and the face of the drum, if it starts to move you can sometime stick a screwdriver or other prying implement in the center hole.
Keep working it, they all come apart eventually.
4x4, 5sp, Std Cab, Stepside, E4 Red
4” Lift - Coil-Overs, 6” SkyJacker Leafs - No Blocks (Mistake)
31 Spline FX4 Rear Axle, 4.56s and OX Locker, Hurst Shifter w/Optional Stick and "Made by Grev" alignment adapter