...here we have another victim of the very serious disease called "stupid". Stupid affects millions of people every year. Stupid is not contagious directly. However, while hereditary stupid can also be caused by extreme exposure to the infection. Eventually the immune system, especially in impressionable people, can break down and stupid can infect the person. Even though it takes a long time for stupid to spread from one person to another, people with stupid affect millions of people who do not have stupid. Please be careful when playing video games with people who bear stupid as it can end in, well, this.
OT: As if my above wasn't obvious enough, I would not blame the game for this. I blame the fact that these people were really, REALLY fucking stupid. If I recall, a stupid person killed his friend while imitating a WWE wrestling move. WWE is actually a prime cause of stupid. Then again, a tool who would buy the new Madden game every single year is no doubt infected with stupid. But no doubt there will be politics who can and will rag on (also infected with stupid as said above) about how video games incite violence based around this. These idiots are what help fuel the Jack Thompson fire.