If you listen to the clip from
LiveATC (login needed), you'll here the father doing most of the talking, particularly for "complex" instructions.
He was clearly there, on top of the situation, able to jump in and explained to the pilots his kid was there.
Though I doubt that will do anything to hold back the "Kid breaks into JFK Tower, holds ATC hostage and causes mayhem in the skies whilst dad is having a beer, fag and a kip outside" brigade.