I tried La mouche this evening, but my fingers where to sore.. and maybe a bit weak for that problem. But this one was a really nice consolation prize. The start is really nice!
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.