That's always been the problem with Erebus case. Current AirNZ flightcrew charge out of restaurants as soon as anyone suggests that there might have been a tiny hint of pilot error. (It's like the idiotic response of extreme members of the Jewish faith, who go completely nuts if you suggest that 6 million might be a wee bit of an exaggeration.) In other words, the whole saga has become tied up in political knots. So let's ignore all that PC sh8t: If Capt. Wilson said that the nav track went to McMurdo Station, then the crew have to share part of blame. If not, they don't.