Speed Bleeders for the RS

[mspratz]

I would hope that I can't pull the ball out with a magnet. I think that hydraulic pressure is on the other side of the ball. This GIF from the Speed Bleeder home page sort of shows how it works.

Based on looking at that GIF, the end with the spring was in your hand in the picture, so there is nothing holding that ball in the sheared off Speedbleeder other than gravity. I still say try a magnet. The ball is there to stop air being sucked back into the caliper, so it is free to come out now the spring is no longer holding it down.