Having stood many long hours in the gear pit, I have seen it happen probably half a dozen times, but only a couple of times this egregiously. Usually someone who steps across is immediately pulled back across the line and there is no need to red the deck. The Handler will get a piece of the offender's ass, have a few words with his supervisor, and may pull his flight deck qual for a couple of days. The AGO is looking forward for the most part, and he owns the switch that fouls the deck. Team LSO also has a spotter and they are very good about waving off in a foul deck situation like this one.