I bent the really tiny spring in the upper right hand corner?!

Pull it out, it won't effect it. I have bent those before and there has been no difference in iPods with or without it imo

Can u buy a replacement spring? When I changed my screen I broke it. I have a white screen and I saw a YouTube video that shows when the spring is pressed down by the metal plate on back of screen it works but when it's not u get the white screen. I've put on 2 different screens n they both come on white.

I've had white screens with the spring in before and fixed them with a hard reset.