10nm North of Bundy...at FL320 on climb, at that point surely landing at Bundy or Brisbane would be about the same when you include the descent?
Ixily, I've already posted that I got the basic scenario wrong (or incomplete at least), but I don't think your comment stands up. Most jets will generate 5000-6000 fpm in the emergency descent configuration, so you could be on the ground at Bundaberg in under 15 minutes. Getting yourself to Brisbane would take twice that time. And having a tower on the ground isn't going to be much help if you have a cockpit full of smoke. This situation is truly serious - think Swissair 111.