You mean, just like would happen if there was a major wrestling match taking place in the cockpit, with several people fighting for the controls and sending the plane into dives and gyrations that stressed the jet far beyond its design limits, causing it to start breaking apart in midair?
The plane did not suddenly go perpendicular from horizontal flight to a direct 90-degree angle nose-first into the ground. Pieces of plane wreckage are routinely found miles from the main crash site. This all occurred over well-populated areas, yet nobody saw any fighter jets shooting missiles at anything. The heroes brought the plane down. It's established, it's fact, it's over.