Yeah, it appears to be shunting one of the coils of the humbucker in the 2 position. So you'll have bridge sc + mid sc. If that doesn't hum cancel than swap the black and green wires coming from the humbucker. This will select the other coil from hb in that position and get you where you want to go.
Not a bad first solution, but there's more to the story.
Swapping the two main leads like you suggest will reverse the whole pickup's electrical orientation, with respect to the two single-coil pups. In effect, the 'other' coil is selected, you were correct on that point, but it will now be reverse polarity, giving the same effect as before. Better would be to swap the pair of leads coming from each of two single-coil pups - doing so will allow the same coil of the Hb to be selected in combination with the middle pup. (Presumably the one closest to the bridge.)
xypher, you should stick around, there's no need to "post-and-run", we'll still help you when you ask. ;D And welcome to the NutzHouse, even if you are only a guest at the moment.
Rule #1: All Lives Are Final. Make sure that the life you have just been issued is appropriate for your needs, before departing the womb.
Rule #2: In case you don't like the life you have, see Rule #1.
Hey, xypher, welcome to the Nutzhouse! I see you took the plunge and joined up. Fairly painless, eh? Lots of good info and great folks here. I've learned more here in the last year than in the previous 20. Well, at least about guitars...
I see that I'll have to try to be careful with what I learn. I know that there are some secrects that are just too powerful for us juniors. You know, like the super classified ones where if you tell me you've got to kill me?
Ok, I'm off to practice the Secret Handshake. Can't wait to get the ring!