No matter what the situations Qantas was facing, the grounding of the entire fleet with such hastiness was not a good tactic to employ.
Instead, Joyce could give a real warning that he would do such a grounding in a week or 24 hours if ....
That would have also forced the government into urgent action.
Although it is hard to predict the real long term impact on Qantas of such a drastic grounding, Qantas may have shot its own foot by it.
However, Qantas management may have taken a view that its international passenger flight business will not be profit in its current form, so the damage to that part would come anyway.
The task for Qantas is to bounce back quickly in its domestic passenger flight business.