CR - not exactly "treading lightly" there... Shhh...
Actually, as a TreadTrainer, we were taught about situations like this. Now depicted speed and "soil displacement" is perhaps not a stiriling example, but what is good is that he is driving through the center of the puddle and not wideing the track as you can see other have done in the photo. Treading Lightly is staying on the trail and going through the puddle.
Another aspect is to this scenario is what happens to the mud on the vehicle? If you are offroad in one area, then clean your vehicle in a climatically different area, the soil and plants washed off your car can become invasive species, wiping out your local flora and become an issue.
It's best (although not always possible or practicle) to wash your rig in the same general area of your play area.
Besides which, it's a lot of fun:
Here is another fun video:
http://nwoods.smugmug.com/Jeep-Adve...ulch-2010/11046298_uWLX3#772940347_DXpFn-A-LB