[crazy voyager]

now lets se if I got this right.
Shooter fakes, defender goes up (not jumping straight at the shooter but not jumping straight up either). The defenders to be landing spot is unoccupied right? (if not the below would be wrong)
and then the shooter moves in under the defender to the spot where he's going to land. and then the defender lands on top?

If that is what happens I have an offensive foul.
33.6 Airborne player
*skipping bits not importent right now*
A player may not move into an opponents path after the opponent has jumped and is airbornde.

to move in under a jumping opponent, so contact occurs, is mostly an unsportsmanlike foul. Under certain circumstance it can be judged as Disqualifying

So this could even be a U or D, but no foul on the defender (if I've got the situation right anyway)