:freak: sorry to hear
a sticky situation
Is the lock mechanism on the socket of the motherboard still functional? Can you still place and lock the CPU securely in it?
As for your CPU and heatsink...as long as the CPU and heatsink isn't damaged, and that you pasted it correctly and sufficiently for it to transfer heat properly, then I don't see why you can't use your CPU just how it is right now. But not that you have much choice anyways.
It won't cause any damage if you pasted it correctly in the first place, and it should last longer and better in tough conditions anyways.
I would just leave it how it is.