Here's a video of a full scale Phoenix model that gets ignorant on an 'O' motor. Luckily, the carnage stayed safely away from the crowd. It is believed that the rocket had flown but this was bigger (i.e. heavier) motor and the flier had concern about its stability. This is hearsay but I think it's crazy to fly this class rocket if you weren't convinced that it would be successful. Just shows to go you that TV rocketeers don't have a monopoly on safety lapses.