Due to the short time period witnesses have said it took for the aircraft to begin to self-destruct in flight, I am inclined to think that the aircraft broke up as a result of some flutter mode, possibly involving the engines.
Passing through the wake of a 747 in itself would not cause the failure of the primary control surfaces, however a aeroelastic effects induced as a result of exciting the airframe at a particular frequency may.
If the aircraft was found to have passed through the wake of a 747 it may have induced an unknown flutter mode which could lead to a rapid self destruction.
IMHO it will be a very long drawn out investigation.
Genghis do you have any thoughts on this theory ?
Z