Travel or Held ball?
 

A1 goes up for a shot with both hands on the ball. B1 gets a hand on the ball and pushes the ball and A1's momentum toward the ground. B1's hand slips off the ball. A1 lands on the ground with both hands still on the ball. Ruling?

If the touch by the defender prevented the release, held ball.

A1 never releases the ball. It's in both of his hands the entire time.

If it prevented A1 from releasing the ball, then it's a held ball. If you judge it didn't, travel.

Let The Mythbusters Handle This ...
 

When an airborne player keeps control of an attempted shot that is blocked and is unable to release the ball and returns to the floor with it, that player has not traveled; it is a held ball. If, in this situation, the shooter loses control of the ball because of the block, then this is simply a blocked shot and play continues. If, in this situation, the defender simply touches the ball, and the airborne shooter returns to the floor holding the ball, it’s a traveling violation. When an airborne player tries for goal, sees that the try will be blocked, purposely drops the ball, and picks up the ball after it hits the floor, that player has traveled by starting a dribble with the pivot foot off the floor.

Looks like a held ball to me.

From your description it sounds like a held ball. Had a similar situation last week, instead of shooting, the player was attemping to pass the ball.

This is the key. The official must judge whether the contact prevented A1 from releasing the ball, and rule accordingly. So if the question comes down to: "how do you know whether the contact prevented A1 from releasing the ball?", the answer is: sometimes you just gotta ref!

See NFHS rule 4-25-2.

It's why we get paid the big bucks (unless you work in Louisiana)!

+1 apg :d