Perhaps you should read the MH370 thread where all this was discussed and engine off from height was actually checked out in the flight simulators (hint search for phugoid not 15 degrees nose up)
I suppose the ACARS, ADS-B and SSR ate at the same food stall but the SATCOM was not hungry thus they all went sick with the first officer
Oh and all their backup systems too - must have been quite an electric party
The uncontrolled reaction to turbulence could account for one such turn but not only the turn back after going dark. However, the night was clear and calm no ICTZ weather to speak of and there were more than one turn, initial turn back then several along the Thai border then descend over home town of captain then a right turn up the Malacca straits then a left around the top of Indonesia then just outside primary radar range another left onto South. Those non-existent ITCZ storms must be really well positioned and their turbulence got it right each time ....
Now as you have lots of time you should read and understand what William of Occam was positing.
