Uke catches 1st form, then as Nage turns into the technique, Uke uses the other hand to catch 8th form (Catching both hands from behind).
Nage continues the turn, using a rotational movement to draw Ukes posture forward, and places his right leg behind Uke. Circling back with the arm, Nage then pushes his centre forward which drives his back into Uke. Combining this with a rotation of his centre completes the technique.
Nage = Sensei Mark Eastman.
Uke = Sensei Brad Beeden.