This 7a does not have any individual hard moves, it is just very long and draining. Ones you have done the 6b+ (Le Toit Cornelien) give the 7a a try as well! The boulder was too long to take a video (and I needed my partner to shuffle the pads around all the time), therefore I made 2 pictures of the crux moves.
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.