How to repair ripped off solder pad
If the trace leading to the pad is accessible, you can use an X-acto knife (or a similar precision blade) to carefully scrape away the solder mask and expose the copper trace. Then you can either use a small bit of wire or a solder bridge to repair the connection to the switch. After you successfully test the repair, you can finish it off with a small dab of superglue to hold the wire and/or switch in place.