I destroyed mine taking it apart the wrong way. Turns out all you need to do is remove that pin that pokes through the side of the housing. Push that out and the housing slides right off. Don't mess with anything on the rear of the switch where the fuses are.
Once you get it apart I'm not sure the best way to put it back together. That pin will be damaged when you remove it. You'll need to find a new pin or try and salvage the old one. Let me know how it goes.