Couple of years ago we took some back roads, not quite what you are describing, but with hills, wash-outs, wash-ins, corners, puddles, you name it, even loose gravel. Marca said it was the best part of the ride. Go slow, relax, relax, relax and enjoy, and NO front brake. Remember that you're much less likely to go over with power to the back wheel, rather than brake to the front, or back for that matter. You'd be amazed at what these ventures can do.
You might want to look at the roads we took,, came to a 'puddle' that I thought to better not cross, turns out I was right.
http://s512.photobucket.com/user/marcarl_photo/slideshow/?albumview=slideshow