I found the center of the 2 stars on Mine, was Aluminum, riveted essentially, joining them to the threaded center.

so I forced it upward (in the steel steerer fork) it, the aluminum, is the weak spot
you could further weaken it , by drilling off the edge, some,
then Pulling against the top by the flat-washers I put across the top of the fork

once the star nut comes apart, I turned the stars edge on, and they came out easily..

suspension fork crown cast on the steerer tube would not allow pushing it through.