[cyberkid]

I was thinking a few ways of fixing this~
You could find a small screw that fits inside the broken part, then screw it in and using pliers pull on the screw and unscrew it slowly.
Another way would be to find a metel rod the same diameter as the ab's needle, brass or copper might work best as they are softer metals, shape the end into a needle point and insert the rod as you would the AB's own needle. then pushing firmly turn the rod clockwise.

Hth,
Steve