Drum brake seized... Please help!

I've been able to, in the past, hit the facing of the drum with a hammer. Sometimes the shock of the blow will loosen things up and allow the shoes to "spring" inside the drums. After that I've been able to put a screwdriver or prybar on one side between the backing plate and drum and pry out a little while tapping the other side of the drum with the hammer, alternating one side to the other, until if comes off. With a good enough pry and enough force the shoes will slide out of the drum.
If that fails, as everyone suggested, out comes the cutters and away goes the nail heads.