Fun moves to the lip and a full-value Font mantle to top it off. This line enjoyed a short stint as the most popular 7b in the forest, when a popular guidebook mis-printed the grade.
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.