Some clarity.
This aircraft was inside the zone, not on top of the zone. This aircraft was flying erratically and mute and was seen low level close to the runway. There were at least 3 airliners ready to go, I lined up. Wake turbulence on departure could have got him/her.
Takes a brave sole in ATC to do anything other than freeze the frame. I would imagine they have well thought out procedures and adopt them to protect everyone including the bandit.