Another episode of "T or No T"...you make the call

[ref2coach]

Originally Posted by BadNewsRef

Nothing. The momentum of his jump has him going away from the basket and he grabs the rim to steady himself.

Ding, Ding, Ding this is the winner for me.
He is going under the rim, during the jump he rotates his body 180 degrees from his original direction. When he dunks his hips and legs are not yet vertical under his upper torso. The grasp and pull, brings his body vertical he then lets go and returns to the floor. Nothing other than insuring his ability to land safely.