A really interesting move to get off the ground. There are lots of options to be had, so it comes down to finding a place to jam a foot in a way that lets you still reach the crimp. Fun times.
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.