Hahahah!
I have never even considered doing something like that, I always assumed if a pin snapped it's goodbye cpu.
However, if you can get enough pressure on the heatsink and force the cpu to make contact with pin, it should prob work.
Wouldn't hurt to try. If it fails turn you mobo upside down to get it back out I guess.
Good luck with the bush fix, I would be interested if you get it working or not.