A player may slide on the floor
 

"A player may slide on the floor while trying to secure a loose ball until that player’s momentum stops."

A player having secured a loose ball may slide on the floor until that player’s momentum is exhausted.

"7) If, in this situation, the shooter releases the ball, then this is simply a blocked shot and play continues."

I believe somewhere there's language that says if the shooter in the air drops or loses control of (releases) the ball as a result of a defender's play, it's still a held-ball. I've felt that the boundary condition is, did the shooter release it (lose control) or did the defender knock it out.