That was a great episode.
This has also happened with the language Lojban[1], which was 'forked' from Loglan[2] when the creator starting making copyright complaints so the community could maintain control.
Such an odd concept that someone could 'own' a language, but I guess if you created it I can see why you would want to.
[1] http://en.wikipedia.org/wiki/Lojban [2] http://en.wikipedia.org/wiki/Loglan