6 Players During TF Administration

[crosscountry55]

NFHS. During the final FT of a multiple throw, C charges A2 with a TF before A1 releases the ball. A1 takes his final free throw with the lane clear and then the crew shifts focus to the other end for the TF FTs.

During the transition to the other end, an official beckons in a sub for Team A to replace buffoon A2. A2 doesn’t realize it immediately, and so mills around the division line with all the other players. The crew starts to administer the first TF FT just as Team B notices Team A has six players on the court and tells the nearest official, who also notices this just as A2 is finally ambling off the court.

Thoughts and what would you do?