Talking about the video ......
I saw only one tail-slide.
- The first maneuver (33 sec.) is a vertical climb to zero knots airspeed, pitch axis forward and lead the way out of it without losing any altitude.
- Second maneuver (44 sec.) is a full afterburner 360° turn with minimum radius. Watch the vapor contrails!! ...... "Pass some of that g's this way".... the crowd will say.
- Next climb (1.07 min) is a high angle of attack loop with sink/yaw right rudder 180° on exit. (Over 150 Knots on top, right before the loop begins and the sink is flat ...... so this is not a tail-slide).
- Next (1.56 min) you'll see the "showing the guts" pass (bay doors open and close).
- The fifth maneuver is a variation of the third:High AoA loop, flat sink, yawed left rudder 180°....... and right rudder 180° on exit.
- The next (3.14 min.) is actually the
tail-slide maneuver, a little sideload to the right at finals, but pretty well made considering (thrust vector or not) there's not enough air over the control surfaces to handle the yawing / pitching moments.
You'll see clearly the FLCS trying to keep the balance.
- Finally, the next two (4.22 and 4.35 min.) are a couple of full-afterburner loops.
Saludos.