I recall seeing a post for a fairly easy to make stuck case removal tool. A bolt, a drill, a socket set. I'll try to find the instructions.
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Ah, here it is (I'm not guaranteeing it will work. Just posting what I read) :
From this thread at THR:
http://www.thehighroad.org/showthread.php?t=412818Here is what you need to remove the stuck case, and instructions on how to use it.
13/64" drill bit to drill out flash hole
1/4" Tap to tap the inside of the flash hole
1/2" Socket (1/4" drive) goes up against die and allows stuck case to be pulled into it
1/4" x 1 1/2" Washer on top of socket (keeps bolt from gouging the top of the socket)
1/4" x 1" Machine bolt goes into threaded flash hole and is turned to pull case out
If you need extra insurance, get the setup ready, leave the die in the feezer over night, then pull.