Started with my left hand in a weirdly twisted undercling, right hand on a crimp, and went with the right to the crimps above. A little hard to come into the next pinch with the right hand, intermediate crimp for left and then up to the better holds. Great line!!
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.