CPU stuck to heatsink

I'm switching my P4 to a new motherboard. When I tried to remove the heatsink from the old board, the CPU came out with it. Everything seems fine, and none of the CPU's pins are bent, but I can't get the heatsink off. I used the thermal pad that came with the heatsink, not thermal compound (I'm kicking myself for that now). I tried to wiggle them apart, but there is no movement whatsoever -- it's like they're superglued together. Is there any way to get them apart, or do I have to trash a perfectly good CPU?

Though I've never tried it myself (mostly because I've never had the same problem at home)... I have heard putting the whole works in the freezer for a while will make the TIM brittle and you should be able to pop the processor off with no effort.

thanks to all the suggestions yall have provided...the one that worked for me immediatly, was to use a small flathead screw driver and apply a little pressure to the corner between the heatsink and cpu top (((...((( the corner is the Key point 4 seperation )))...))) this is when you pull out the heatsink with cpu stuck to it.