Now here's a thought
It would seem very clear to me, what with the stress involved of an uncertain financial position regarding tax, having HK provisional tax and AUS paye tax, the severly restricted cash flow month to month....
I would be so stressed by this I would just have to visit my doc and get, oh... About 4-6 weeks stress leave?? That ought to do it.
Too stressed to fly an airplane. Legal requirement to book off unfit.
Simple.