Doug,
What about attaching the spin sticks/wires to the forestay eyes? I wonder if Haken can remove that setup and sail his A as a one design A. I dont think he can. I wouldnt want to do something I couldnt remove for A only races.

Check out how Landy rigged his boat. He used line from the bows and a pole to keep the bows in line. You could do the same thing from the forestay eyes, maybe not go all the way to the end of the pole.