I'd like a way to disable the filter, too.
For example, I play in a PbP in French on these forums. It's DMed by Guillaume, if you want to find it. The story is the "Shackled City" thingy from Dungeon Magazine. As you may know (if you don't, that won't spoil anything), there's a problem with children kidnapped from an orphanage.
So, of course, with children, people will speak about "little ones". Which is said petits in French. Without it being a naughty word.
I had the same problem, but in English, on the Wizards board. It was impossibe to ****yze monster strategies with a ****atrice. Since then, the filter has been fine-tuned, and you can talk about analysis and cockatrixes, but that was just an example of problems with profanity filters.