Alan Joyce did imply to one Qantas crew on the flight deck (I personally remember them discussing it) that he'd quite happily sell Jetstar to private equity for the right price, exactly in the same vein as angryrat's description of the AJ interview.
I think ultimately if anyone seriously believes Alan Joyce is the slightest bit interested in the much longer term viability of Qantas they need their head read. Just like Dixon and Jackson, Joyce and Clifford will sell the family jewels in the mere blink of an eye if it makes them a lot of personal wealth and if they can legally get away with it. The four of them are birds of a feather.