I'm trying to get my AMD Phenom II X6 1090T off of the stock heatsink fan because I was going to apply a new layer of thermal compound, thinking the stock was smeared off by accident.
Well, when I pulled the heatsink fan off, it pulled the CPU off with it. No, the CPU is stuck to the heatsink, and I can't even put everything back on because I need to unlock the CPU holder arm, which prohibits me from lowering the HSF back in.
What worked for me was spraying some WD-40 into a small cap (medicine bottle cap can work too) and then I put a few drops at a time on the surface of the heatsink (between the heatsink and CPU) and let it seep in. I then waited a few minutes and with no effort it popped right off.