Throw in spot

[Nevadaref]

bgtg,
YOU were correct. You did it right during the game. The ball comes back to where the thrower was when he threw it. You even have the right rule reference, 9-2-2. Just look at what is written in the penalty section.

PENALTY: (Section 2) The ball becomes dead when the violation or technical foul occurs. Following a violation, the ball is awarded to the opponents for a throw-in at the original throw-in spot.

Here is the best case book play that I can find for you:
9.2.8 SITUATION: Team A is awarded an alternating-possession throw-in. A1 lobs the throw-in pass toward A2 who is breaking to the basket. The throw-in pass is too high and lodges between the ring and backboard. RULING: Violation by A1 for lodging the untouched throw-in pass. Team B's ball at the throw-in spot. Since A1 violated during an alternating-possession throw-in, Team A has lost the arrow. Team B will have the arrow for the next alternating-possession throw-in. (6-4-5)