What do you mean by "upside down in socket"? The only way to find out is to put the CPU in and see if your computer works. I bent three pins on my chip and it fortunately still works so just hope for the best.
I highly recommend not to turn it back on as there is a chance of causing a short and frying board or cpu. I have had experience in this and have repaired it but first what socket type is it as you may depending on the socket attempt to pry back the pins be careful