Sitstart far left in the narrow corridor, use the vertical side pull hold for the left hand and the nearest sloper for the right hand, traverse right onto the line for Le Bivouac de Pilou and exit in the same place.
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.