Overhanging roof problem that traverses the lip of the boulder with a series of heelhooks culminating in an awkward slap to a slopey ledge and final tricky mantle. (Thank you Veronica Melkonian for this precise description!)
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.