The big question will be if Andrew David at Domestic falls on his sword too, or if he is converted to a group COO role and continues to hold the AOC. Then you have to wonder who is being lined up as Alan's eventual successor - seems Gareth Evans will now be in pole position until somebody else rises up.
The other possibility is that Joyce will hang aroung for quite a while as he lost a big chunk of his wealth when the QF share price tanked - he has so many shares that he would be keen to do everything possible to elevate the share price before he departs. It has nothing to do with his "love/loyalty" for the airline.