Wow! There's a discrete module inside the box inside the box!
Make a little PCB! Lay down a "fan" of etch resist lines leading to where eventually you will have the tiny fingers. (The distal ends of the fan lines will be where you will eventually attach your wires.) Then, where the fan lines meet, where you'll make the tiny fingers, with a sharp tool, scratch away the resist where it isn't wanted.
Etch the board
Tin the surface of the "fingers".
More on doing your own PCBs at...http://www.arunet.co.uk/tkboyd/ele1bp.htm
Postion the wimote sensor over the tinned fingers. Add a little flux, if you can... but not "plumbing" acid flux!... heat on a hotplate (or inverted laudry iron)
(Or just buy a new Wiimote to hack! Send me a private message if you would "sell" your exisiting sensor to me in exchange for a contribution (how much?) to a charity (US or UK), and tell me if you would rather send it to US or UK. Also tell me if you've tried soldering to the internal module yet... that will affect my interest!)