I have a Snap-Roll type move, but it's done going into the stall, with a stall recovery within half a roll followed by a pull out.. I use it mainly to get out of trouble.
Have old video of 3 online track sections on 3 different a/c... works on any a/c
To do a full 180 nearly horizontal turn on the rudder within, even 5 seconds.. well that's for a magician = optical illusion
These new air combat films are going to be a dissapointment.. sad that they cannot get their facts right.