It will be interesting to learn of Air Asia's actions with the crew. Not only did they show a huge lack of procedural knowledge in the flight preparation, and discipline with disregard of warnings and mis-use of checklists, the F/O then exhibited huge lack of technical knowledge in his suggestion and subsequent attempt to realign the IRS's in the air. Not to mention that the view out of the side window after 400' is not what was expected.
"Oh, a/c is turning left and we expect to turn right. Why?" Heads down FMC-ing? Solution: disconnect, ask for vectors and clear critical airspace.
As someone said, why can they not fly an instrument approach to Sydney. They still had 1 IRS it would seem for attitude information.
It seems a little more than a re-training session is required.