Start on the far left and traverse low on good holds, finishing with a mantle on the right arete. Because this is so low it favours shorties, so take a tall guy along for a laugh :-)
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.