It sucks because I can't even buy another one anywhere near what I paid for mine...
That really sucks I'm sorry to hear man. You could try to RMA it with XFX since they allow the OEM cooler to be removed. Yes, it became damaged, but I'm sure they get many returns from miners and you didn't kill it by mining or overclocking. It was damaged by AMD's manufacture not putting epoxy between the ram and core.