I am not a pilot, but I have been a manager at for years. I do not understand the mentality to sac your lead person over something like this. He was obviously skilled enough to do this. If you have to discipline him, do so. But to publicly fire the guy makes no sense......unless there was prior history or he asked permission and it was denied, and he did it anyway. But from an overall safety perspective, I did not see that flyby as any more dangerous than most. I am more afraid of the message it sends to the rest of the troops and the morale issues it could cause.
If you want to see an unsafe flyby, the third aircraft in this flight seems to fit the bill. The only thing he doesn't do is close the gate as he leaves. And I bet he is out there somewhere flying passengers or freight right now.
http://youtube.com/watch?v=fJGVXpunZ_4
Patrick