I don't think I had many problems with mine, but it was a while ago... have you tried a three leg puller on it?
failing that, lay the old crank back in the block whilst you still have the old bearings in (so you don't bugger up the new ones). Put the mass damper pulley back on and bolt it up to the sprocket. Then use a rubber mallet on the back of the damper, turning the crank a little each blow until you work it loose.