RVs and mud are a bad combination ... but if mud happens ... keep the momentum up, don't hesitate! If you're driving back out of a spot on a dirt road and discover you're in a soft section, it's likely too late, hit the go peddle not the brake!
Always assess the road into a camping spot and think about negotiating it after a downpour. There are some places where it is simply best to stay put until things dry out.
Typically when the road gets crazy, pictures aren't even a thought! Years ago we headed back out of a spot and found a lot of water that wasn't there on the way in... Take it slow through water but be ready to nail the go peddle if the center is soft.