First: You are going to need to render that clip if you want anyone to actually see what you are talking about. I'm sorry, but no one cares enough (myself included) to download it to my 360 and go watch it.
Second: Stuff like this has been going on for a looooong time. It's not going to stop. A lot of people are idiots, and enjoy griefing other players. Sadly you just have to put up with it (when it happens)
Third: Bungie could basically care less about H3 (not really in a bad way). Reach is coming out, and yes, it will have bugs and little glitches. That is what they will pour time and effort into fixing.
Bottom line is this:
The majority of H3's problems aren't because of Bungie.
It's because of the players.