The judgement addressed the copyright status of model codes (eg the NEC itself) and local enactments of the NEC which become state law:
By the code writing bodies getting their works into law, they are giving up their copyright on the version of those documents as enacted in the local law; the actual source document (eg NEC 2008) is still their copyright, even though 99.99% of it has been released by their own actions into the public domain. It is a copyright offense to distribute a copy of the "real" NEC outside of the publishers wishes.
If the code writers want to retain full copyright control, they have to keep the work from becomming law. One could then wonder what would be the use of a NEC that wasn't adopted anywhere by anybody and thus had no enforcible provisions. Yes, they are caught between a rock and a hard place. But it's not a new rock; its been there since the 1834, well before there was a NEC.