Abandonment, Force Outs, End of Game?

[BJ Moose]

I'm obsessing (slightly) about a possible conundrum in NABPL. So consider.

On my Assoc List we are debating one of E.Barkuis' Rhubarbs.
Briefly. 2 outs, bases loaded, tie game, bottom of extra frames, Batter SINGLES! R3 touches home, B-R touches 1st.. BUT.. R1 only gets half way to 2nd, then heads toward 3rd base dugout to join celebration. Def is heading off field dejected.

Answer is -> Call R1 out for abandonment, no runs, go onto NEXT extra inning!

This would HAVE to assume that the call is a force play.

But now a conflict. NAPBL 3.14(play). Same as above, but Batter hits HOME RUN. BR does NOT advance all the way to 2nd but head to join celebration. Ump Calls R1 OUT for abandonment BEFORE R3 touches plate.
RULING: No runs, time play.

Huh?? First, if it really is a TIME play.. then lets apply some real world practicality.

WHAT UMPIRE in is RIGHT MIND would make this call BEFORE R3 TOUCHED HOME? Assuming nothing weird , so a couple seconds of delay... R3 touched, B-R touched... and you have a classic 4.09b END OF GAME. Heck, after all, were you REALLY SURE R1 had abandoned?

I also see conflict with the orig sitch and answer. If a "force" situation with a live ball base hit.. why not a force situation on the home run?

And one more consideration back to the original sitch. (Bases loaded SINGLE) Would it matter WHEN the ump called R1 out for abandonment? Meaning before or after R3 touches home?