It's a recipe for disaster. Create a slightly flimsy looking multi-rotor flying apparatus, equipped with what appears to be an exercise ball as the central landing gear, and then place a person with a remote control pad on it. Ordinarily, you'd expect this to be the cue for screaming and yelling and maybe a missing limb or two. Thankfully, the German pilot emerged unscathed, with nought but a sense of satisfaction and a pretty cool looking show real.