It may just be shadow or left over paste or something, but to me in the pic it looks like something hit the CPU making a mark from bottom left to upper right where above the 'Z" the lid is dented from right back to left.
There was an issue with the stock paste that came on these that would have the CPU stick to the cooler and quite often the CPU itself would come out along with the cooler. I would think that if you are super careful and take your time you may be able to use some toothpicks or flat end coffee stir sticks to slowly go around the edge and pry it up out of the socket. You will want to go slow and make sure you are keeping the 'pull' straight up and down as much as possible. If you break or bend the pins it will be game over IF that CPU works at all now.