This is to prove the veracity of this glitch, try this:

Choose the mission 22 "Closure" and select an attacker aircraft, then in the take-off minigame go in A/B and take-off in full throttle, then raise your nose to more of 90º and slow down as much as you can, and you will stall with the aircraft with the nose up, then, keep stalling, and crash into the runway, and in the new take off you will appear in... A Parallel Universe???