He probably wasn't at much risk with that 2500 HD sitting behind him as a shield. I would assume he took the photo to document the position of his vehicle for insurance purposes. Bet he took a photo of the other vehicle, too. Here in Alabama they say move it out of the roadway if ithere are no injuries. Not sure what the rules are in Colorado about moving vehicles prior to the arrival of law enforcement, so can't really say that what he did was right or wrong. I'd lean toward it being right in his mind as he lives there and should know the rules, he was at the scene of the accident and we weren't, and it's his new car that just got creamed.
I'm glad you and your wife are OK, Airspeed. At 3,700 miles they should replace it.