Cabin Crew could be replaced quickly enough, but 14 days is too soon, they'd also need to be trained in doing it Aer Lingus's way.
And how exactly does Aer Lingus find all these people when their entire office staff has been fired? Is the board of directors going to go through and find 3000 suitably qualified people themselves? Who'll set up all the records and payment processes for these new staff. Who'll show them how to use the custom designed systems that Aer Lingus use?
While on paper you might be able to say it's an option, long story short, firing all staff is not an option for Aer Lingus.
Everything is an option no matter how unlikely...................in EI case I have a better chance of winning Euromillions than it occurring but happened with Irish Ferry did it not ?
History is littered with examples of people believing management wouldn't do the unthinkable...................National Union of Mineworkers though that, Ferenka workers in Ireland, as mentioned Reagan with Air Traffic control, Hostess brands with Twinkies..................there are more
Everybody assummes that everything would be the same in the event a company sacked everybody and rehired their replacements..............history tends to show that it never is because new people do things differently (not necessarily always better just differently). Companies always have disaster plans for recovery just in this case they bring them in.