If anyone is curious as to what happened, just go look at the fight path. They did a complete u-turn. 1) Pilots refuel before taking off and have an EXACT flight path. They were just coming from Russia so they had plenty of fuel. 2) You don't overshoot an airport and then decide to u-turn and go back to refuel unless you have a malfunction and had to dump fuel. 3) They circled Austria for THREE HOURS while waiting for permission to land. That alone tells you they had plenty of fuel. 4) Last I heard, they are still there.
http://www.flightradar24.com/2013-07-02/16:35/FAB1