free throw violation?

[Adam]

Yes, and unless the extra player came running in making a bunch of noise; I highly doubt I'm going with disconcertion here. 99.99999878798728341% sure, to give a rough estimate.

[chartrusepengui]

the answer to this situation is easy. Call the double violation. Gather all players in the center circle - and restart the game with a scrum making sure both officials are looking toward the bench to see if/how many players leave bench area to participate or just to get a better view. Then, blow the whistle - have a 10 minute conference with partner(s) to determine whether any additional free throws need to be attempted with the lane cleared and pray that no one decides to cross the 3pt line into a lane space after the official bounces the ball to the shooter.