Some questions for the experts here. (I have looked at Richard's thorough paper):
1) Given that Inmarsat have produced a 'best fit' route for the aircraft, is this available to us? (It is a given that it will no doubt be a 'wide corridor' and not a precise track)
2) If so, can it be established what the approximate true and magnetic tracks were throughout the supposed southern flight? What is the projected path of a continued track as flown, ie is it possible to have guess at any waypoint that may have been active or be more certain that a fixed magnetic heading was in effect?