This problem has it all. A pinchy sit start, a tiny hole for your toe, a mono pocket to pull, two slopers, two crimps, a mantle found in an arête/wall/slab combined in one small boulder.
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.