Traverses on slopers are never morpho! You can place your heel where ever you like and slap that hand on the sweet-spot that you want. It looks like this line is not that often climbed. It's a good idea to clean the mantle before hopping on. It might be covered in pine needles!
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.