If you know it's the side stand switch, most switches are in and Open or Closed state. When the stand is down, I'm going to guess the circuit is open, and when you put the stand up the circuit is closed. It's one or the other right?
So if you're stuck, I'd first try disconnecting the switch and see if the bike starts then. If that doesn't work then you can try shorting out the switch so it closes the circuit and you can start the bike. I'm not familiar with the actual electrical socket on your bike but see if putting some aluminum foil across the prongs will close the circuit for you and you can start the bike? If that works, get a new switch. Good Luck.