When the spring and plunger come out, it's not over. I did this a few times during installation and was able to fix it and install both sides. In this case, all you have to do is put the spring and plunger back in, push them all the way in, grab a small flathead screwdriver, and flip the switch. Keeping the plunger fully depressed, take a screwdriver and firmly press the metal pins. Let go and see if it holds. Then install it in the cork before installing it in the door. Be sure to close the door slowly to allow the switch to adjust itself.