Correctable Error

[johnnyrao]

Here is a "potentially weird" situation that almost happened to me last night. It was close game and the ball went out of bounds right by the table. The assistant coach of team A jumped up and called "time out". I did not say anything because it was the assistant, not the head coach. The Team A scorekeeper (visiting team) yelled to the bench that they were out of time outs. We played on with no problem. At the next stoppage of time the official scorekeepr told me that Team A still had one TO left. This got me thinking. If the head coach had called the TO and we thought it was their last and assessed a T (I know, this is an obvious error but sometimes I make some), and then after we shot the free throws the official scorer noticed the error and told us about it, would this be correctable under "awarding aunmerited free throw". Also, how would you re-start the play, at the point of interruption?