No, just clip the string over the pickgaurd, and you will be able to push the strings out through the backside of the bridge on the back of the guitar. To replace strings you will insert them through the holes on the backside of the bridge where the strings came out. The ball end is to hold them inside the bridge block.\

If you don't have enough string to push it out through the bridge, you will need something to poke in the hole were the string is stuck. Make sure to use something thin enough and long enough to be able to push out the ball end of the broken string. Also make sure to use something that won't break, like a small allen wrench, or a thin metal coat hanger.

Hope that helps you.