Looks like you bent the contact plate at the back, so you'll need to desolder and replace the entire switch (you could bend it into shape enough for it to work, but it won't ever feel quite the same as the other switches). Be sure to save the switch sticker so you can install it in the new switch before putting it in place. If you opted for lubed switches, you'll have to lube the new one yourself also while installing the sticker.