I thought you had the rear disks off earlier in the week?
Wheel of, rotate window of drum to just forward of TDB, medium flat blade screw driver and a pencil torch to locate the daisy wheel, one is up to release the other is down but cannot remember which is which... Then lots of knocking the drum about with a mallet... to get it over the shoes.
If you have the adjusters out then cannot move them, they may just need a good soak in paraffin or WD40. They are basically three parts, nothing to damage. I have to say I got replacement parts for the lever (in the drum) from Maserati and no part was more than £15...
Good luck