catcher's obstruction

[SC Ump]

Very good question, a fun one even with a FED rule book. 8.1.1.d Effect, is the rule. As mentioned above, it gives no specifics as to when the delayed dead ball situation ends. But the case book seems to have the answers.

8.1.1 SITUATION G: R1 on third. R1 starts home as in a squeeze play. F3, who is playing close for a bunt, cuts off the pitch and tags R1. RULING: This is treated the same as catcher obstruction. The ball becomes dead at the end of playing action... [Emphasis added.]

If the ball stays alive until the end of the playing action, that would allow the runners to advance on the passed ball mentioned in the initial play of this thread.

The rule also states that the delayed dead ball does not become dead as soon as an out is made. See rule 8.1.1.d and case book 8.1.1 SITUATION I. If the ball was dead the instant an out was made, how could a runner score on a sac fly?