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.
I used an undercut to control the move to the right arete, beta about halfway through the video here: https://www.youtube.com/watch?v=QOyXjgfPp6o
>Totally worth it :)