Files deleted on the morning of the flight implies that he was practicing something .
It also points to that something being something he was not willing to share .
It also follows that it was something that was to be carried out that day .

I have a feeling that the plan went awry when the transponder was turned off only after the initial turn to the west , when it should have been turned off before , to look more like it went down right there .
The Inmarsat data would never have had to be invented at all if the pilot had gotten that part right .