Get some kind of Phenolic or hard plastic wedge and work it with heat. That way there is no metal to metal contact and you dont damage the spacers. Unless of course you are tossing them then use a brass drift and big effin hammer smacking it around like a pimp.
Edit: Tom and the boys fixed it... beat me to the punch. Tom, I will take your advise though and check the anti seize regularly.
"With great power comes great responsibility." -El-Superbeasto