Kill Throw-in

[Scrapper1]

You're in a tough spot because the ball became live. If you still had doubt about how many players were on the court, you should've whistled before the ball became live; or at least put up your hands for one of your partners to see.

I had the same thing happen during a free throw last week. I had my hand up, but my partner bounced the ball to the free thrower anyway. I blew the whistle and stopped the free throw. In that case, I think I can reasonably say that the ball never became live because I kept my hand up, even if my partner didn't see it.

In your case it's tougher because it's tough to see how you could say the ball wasn't live. I think you did the fair thing, but I don't know if it was the right thing by rule.