clock work

[Slider]

Let's start over (using NF), and see where a correction can be made:

The ball comes in and touches B3 (is kicked).

The timer has the power/authority to start the clock even when you don't chop -- so he starts the clock.

You whistle the play dead.

The timer stops the clock with 5.9 seconds remaining.

The timer has not made a mistake according to the rules (only according to common sense).

If the timer hasn't made a mistake, then you can't change the time (5-10-1).