It is a little strange that Josh took the video but people do strange things in a crisis situation. When I was 14, a friend of mine and I were bowling. A young lady ran in screaming that her friend had just been hit by a car. What did we do? We went outside to see and unfortunately watched this girl die. It was almost like we couldn't look away even though I knew I should've. I'm sure if this had happenend with the current technology available, someone in the crowd would've taped it.
From the footage I saw of Josh and Jon, it looked like Josh wasn't trying to get the little girl in the shot, just the EMT's.
Now, if it ends up on their show, then that would be tacky. Just my 2 cents.