True. I was thinking that as well. With all the theories present one thing still boggles my mind.. how do you make the pilots comply? I thought only pilots have access to the door. How could they make them do anything? I saw this on wikipedia.
February 17, 2014: Ethiopian Airlines Flight 702 "on scheduled service departing from Addis Ababa at 00:30 (local time) scheduled to arrive in Rome at 04:40 (local time) was forced to proceed to Geneva airport", according to the airline.[91] The Boeing 767-300 (ET-AMF) was flying north over Sudan when it changed radio frequency to squawk 7500—which is used in case of hijacking. Nearing Geneva, the pilots communicated with air traffic control to inquire about possibility of hijackers receiving asylum in Switzerland. The aircraft circled the airport several times, before landing around 6:00 in the morning with one engine and less than 10 minutes of fuel remaining. The airport remained closed as the aircraft stayed on the tarmac. At 7:12 local time, the pilots communicated to ATC that they would be ready to disembark passengers in five minutes. The hijacker which was the co-pilot was arrested.
I would never, ever think that it would be one of the pilots that would be part of a hijacking.