If this DayZ video proves anything, it's that watching TV most certainly impacts your actions. At least your virtual, inconsequential ones, anyway.
Remember that scene in The Walking Dead where [spoiler] Shane shoots Otis to escape the zombies chasing them? This betrayal in a round of Arma II mod, DayZ, is pretty much the same deal.
At least this one player's forced sacrifice won't have been all for naught, considering his two "friends" manage to escape while the zombies feast on his body. Number one rule in survival mode: it's every jerk for himself.