I think that you misunderstood the subject where you slipped in here.
A freeper who will remain un-named made an assertion that using a different reference would change the nature of the forces, and that the forces themselves were the result of a particular system of reference.
No. If you look carefully at what I wrote, the bodies orbit no matter what the reference point. The "forces" I programmed did not care what coordinate system was used. The final result was the same(Euclidean universe), orbits.