This thread is hilarious, its like watching a car crash.
Personally I wouldn't have stopped but I also wouldn't demonize someone who actually did, or in this case, someone who thought about it ffs.
For those of you thoroughly shocked at the prospect of someone taking photos of a major incident, I recommend a new phenomenon......its called the t'internet. Go and have a look at one of the newfangled so called 'web' sites, whatever that means, called
www.youtube.com and search for car crash........take some popcorn.