What do you think of this ruling?

[Nevadaref]

A1 is fouled by B5 and is erroneously awarded bonus free throws. A1 makes both free throws. Team B then takes the ball inbounds, and on its offensive end, A4 commits Team A's seventh team foul by fouling B2. The officials realize they have erroneously awarded free throws to A1 (a) before the ball is at the disposal of B2 for the front end of the bonus, or (b) after the ball is at the disposal of B2 for the front end of the bonus.

Ruling: In (a), the error is still correctable as it was discovered before the first live ball after time had come off the clock. The foul on A4 and the free throws by A1 should be nullified, and the ball should be put in play at the spot nearest B5's foul. In (b), the ball having been put at the disposal of B2 constitutes the second live ball after time had come off the clock. The error of granting A1 free throws cannot be corrected. A1's free throws count, and play continues with B2 attempting the first free throw.