The posters at pprune.org really want it to be an accident rather than deliberate, action, especially if it involves the pilot. Posts there point out the following events which would seem to make the accident scenario as described unlikely. .
- it ignores the ACARS message indicating WP was altered prior to 1:07
- ACARS would have sent some emergency messages indicating major problems
- the nearest safe location to land was likely Vietnam, and if in trouble it is easier to keep going forward rather than turn.
- why the funny arcing course afterwards.
There were a few more points that I have missed.
In any case I'm afraid this one has most likely been done deliberately. A short time ago Fox news had a retired USAF general, Lt. Gen. Tom McInerney who basically said the plane was in Pakistan and he expected some announcement in 24-48 hours. Seemed quite certain about it. Funnily enough Mr Murdoch himself tweeted a few days ago it was in Pakistan. Reading too much into the tea leaves perhaps...