Question on 2006 Umpire Exam

[LittleLeagueBob]

Originally Posted by bob jenkins

The question is assuming that R1 was obstructed before a play was being made on him. Thus, it's "type b" obstruction, and there is no minimum award. The answer, given the assumption, is correct.

I understand the award, or actually the lack thereof, of the obs in this sit - but I don't understand why "time" was called when the play was being made at home and the batter sent back. I thought we were supposed to wait until no further playing action, then call time and award as appropriate on the obstructed runner, but allow the out to stand (in the case).
THanks!