Anyone taken apart a clockspring (contact unit for airbag)?

[elgyqc]

My horn stopped working and I traced it to the ground connection not making it through the clocksping under the steering wheel. I was able to find a used one locally so the Boxster has got its beep back, but I would like to have a look inside the old one to see if it is reparable. I haven't found an easy way to disassemble it so am looking for tips.



I assume the center ring in the picture has to be pushed back through to separate the top and the bottom of the unit.