Is it like a "roll-away" and pull underneath ??? I.e., change direction of the turn ?? I got spoiled with the high roll rate of the A4
It is a technique to get the flight control computers to do what you want as rapidly as possible. It is normally used at high AOA, lowish airspeed, such as a ditch during a BFM fight. (Think pull pull pull pull pull, hyber, pull pull pull pull pull). What the jet does is breaks the AOA, then rolls at max roll rate. Normally the pilot stops the roll after 180 degrees. In the C, or almost any other airplane for that matter, this is done by FIRST breaking the AOA with an agressive bunt, THEN rolling with rudder and/or aileron. In the Rhino the FCCs don't respond to this technique as well as they do the hyber, plus the hyber is very easy to execute with looking over your shoulder. Not to mention it is easy to explain to a student.
To summarize: the jet doesn't do anything special, just a name for Rhino-specific control input to effect a standard BFM ditch.