[Casey B]

You may want to look up Harry Moons trailer restoration on the restoration part of this. he took the drum and all the brakes off the axle ends all in one piece and then he'll remove the siezed brak cylinder and shoes etc.
Put lots of eds red along the gap or where one should be between the drum and the backing plate. eds red one part acetone the other auto trans fliud equal parts shaken together. the wia then hit it hard...they'll loosen up. Ask harry about his and you may save a lot of grunt and time. Good luck!