Well, I see what you mean now!! The distance beyond the judges for the pits was called distance "C" in the 2007-08 rules and is now eliminated from the field layout for the 2009-10 rules. Since this distance was never listed in the text, I would say it is not a current rule. I will not move my pits any closser than the 450 ft. we have been using, but I can see how this may make a few new sites work with a smaller footprint for the field.
Might prove to be an interesting point!