At this point, anything you try will be an exercise in determination, since you probably have better things to do than spend a bunch more of your time trying to save $30.
The heat/cold thing may do the trick. I don't know off the top of my head which has the graeter thermal expansion ratio, steel of the die or brass of the case. But, assuming the die can be heated, and the case chilled, you'll still need some type of force to pull the case outta the die.
I'm thinking a copper or bronze bore brush, like maybe a 20gauge or so, stuffed partway into the case may have enuff grab if you can get the die hot and the case cold enough at the same time.
I'm thinking that putting the die w/stuck case into the oven at 350 degrees for an hour, then quickly putting it into a vise, and jetting the contents of a CO2 powerlet, or other COLD gas, up through the case, then quickly stuffing the oversize bore brush into the case and pulling back sharply, may do the trick.
Or, maybe the easyout will work. But, it sounds like you still have a bit of a lip on the case where the rim/head used to be.
Myself, I think I'd already be in posession of another die (set).
Paul3588,
You don't NEED sizing die wax; it's just that it's so much easier, for me, when sizing small lots of cases, to use it than to use any other caselube I have seen/tried. If the Hornady stuff works for you, I'm happy for ya. I have a friend that shoots/reloads thousands of rounds every year using it. I'm the guy who turned him on to the Hornady aerosol. Me, I get in trouble every time I use the stuff; I just gave him my last can which has been on my shelf for 7 years.