Good point Simon. I admit that I missed the bit about the bush turning... (D'oh!)

A possible solution may be a flat shoelace tightly looped around the stud several times (not tied). With the other end looped around something lie a wrench or screwdriver) for a "T" handle to pull with.

I use a flat shoelace for prising off stubborn knobs on splined shafts. (but without a handle)