Cant remove amd phenom heatsink

your photos seem to show that you have not even unlatched the clips holding the assembly to the cpu motherboard base. one on each side of the heatsink.
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once this is done dont pull upwards, gently turn left and right the heatsink, until the dried up heatsink paste releases.
 
If you've unlatched the metal hooks on either side of the retention bracket, you might be able to gently twist the heatsink to break the seal on the CPU. Other than that, I can't think of a real safe way of getting that off. Twisting has always been a pretty reliable method however.