I will stand to be corrected, but in a fighter it's a rolling maneuver at high alpha. It looks like a helo pedal turn when the flightpath vector is steeply downhill and airspeed is low, so the descent rate is hard to perceive.
The Su-35S display has a somewhat similar maneuver, but with more T/W to play with and better low-speed aerodynamics, the pilot can stop the turn and fly out. It seems that the F-35 has to stop, pitch down and dive to recover speed.