Microphones for umpires?

[Fan10]

Originally Posted by DG

7.06(b). If no play is being on made on the obstructed runner, the play shall proceed until no further action is possible. The umpire shall then call "Time" and impose such penalties , if any, as in his judgement will nullify the act of obstruction.

In this case we went from defense getting two outs after committing an obstruction violation, to offense having bases loaded with no outs. I would say the ruling nullified the act of obstruction.

The crew did not declare the ball dead at the time of obstruction, since there was no play being made on the runner. At least two of the crew are shown making the call, but neither killed the play. They made two out calls following the obstruction so the play was not dead. They let the play go and then ruled accordingly to nullify the act of obstruction.

How would sending the runner who was tagged out in a rundown between third and home back to third be considred nullifying the obstruction when that runner was not obstructed?