End of game - clock not started - what would you do?

[bucky]

NFHS: Team B is down and has to go the full length of the court. There are 5.7 seconds on the clock. With heavy pressure, the throw-in is administered. B1 inbounds the ball to B2 and the administering official chops her hand to start the clock. B2 dribbles in the backcourt and the trail official is counting the 10 second count. B2 makes a long pass to B3 who catches the ball near the top of the key and shoots a shot. At this point, the trail official is at 4 in her count and notices that the clock has not started. Being diligent, she continues her count as the shot is in the air. The clock has started. There is a long rebound and B4 secures it. Now, the trail official is at 6 in her count, blows her whistle, and notices that the clock has stopped with 3.7 seconds. The officials confer, indicate that time had expired (based on her count), and declare the game over.

Two questions: Was the crew correct? What would you have done if you were Trail?