Looks like they took the pics as they were pulling it out.
But yeah, if the story is true, I don't know how this could have happened. My guess is that a guy bought the hummer and failed to put it in park when he got out to launch the boat. Then he needed an excuse to why his hummer was under water, so he made up the story of the teenage daughter.
Unfortunately, I've seen a few H2's at the boat ramp, and they are usually accompanied by a guy who puffs his chest out, stands about 5'4", and can't back up an empty trailer worth a damn.