The only thing I see wrong is that they guy should've done this at the range. If you don't know what you're doing, do it in a place where you can test/practice safely. Don't cock a hammer until you're in a spot that you can attempt letting it down while pointed downrange. Just a stupid mistake from a newb, but I agree with the comment about YouTube. Unless that fella had no access to internet there's no excuse for not figuring out how to handle the gun properly in any situation he might've been in.