It's a ridiculous excuse anyway. There is a greater likelihood of a meteor crashing into the earth than being injured by phones, keys, or other objects falling from a roller coaster (that's the former physics student and theme park employee in me speaking). The injury from Dueling Dragons, assuming that is it true (it has yet to be proven to be anything other than rumor), was one random injury that was unlikely to ever be repeated. Six Flags and other regional parks have been operating roller coasters for over decades, and I bet you can count on one hand the number of injuries caused by keys, phones, or other objects from riders.