You don't even need another switch, i've never had a switch go out, but I have recieved boards that needed the soldering re-done.
usually just heating the solder on the switch, let it melt, then thats usually all you need to do.
Some times the factory connections are not the best. There was a batch of QFR's that had a really poor solder joint and often needed re-doing.
unless you're into changing switches or anything I would just leave it as is.Though if you decide to sell it or replace it, someone would still pay a good bit for it since its easily fixable.