Peened pins : forget it.
If not peened : Grind a long tapered blunt point on a 6 penny nail, hold in vice grips and heat the nail with a torch.....push on pins with the nail. The heat transfer melts the epoxy and works pretty good.
Corbies: I wouldn't bother. Chances are you'll never get a dead center 3/32"- 1/8" hole through both pieces with rounded contours on the handle. If you're lucky enough to pull it off, the hot nail in the hole will loosen the epoxy so you can lift out both pieces.
If you have access to dry ice : Rest the tang on the ice for a minute, liners and all will pop right off tout suite. Erics' method will probably work faster if you pop the knife in the freezer for an hour or so. Chances are you drilled a million lightening holes in the tang so give it a chance to work. Once it's cold enough, tap the tang on a solid object.
Of course these are all long convoluted methods to save your wood. If the pins are all out, I've had pretty good luck sliding my (sharp) pocket knife in the end of the tang and working it like your opening a clam after some freezer action.
Good luck,
Rudy