[QUOTE=SAump;861655]It wouldn't seem “fair” to call B4 out and return R1 to third base.

B4 is out and R1 scores, and R2 and R3 are declared out. Three outs.
B4 returns to bat, R1 returns to 3B, and R2 and R3 are declared out. Two outs.

I don't think R1 is being returned to 3B and therefore not scoring. She's not scoring because R2 and R3 were out at the start of the play so the catch is the third out.

Minus ejections?
 

12.9.4 When, after play has resumed, she fails to return to touch the base she previously occupied, and the defensive team makes a proper appeal. Ruling: The base runner is out.

See OP. Run R1 scores, three outs. 1) B4 out on Sac Fly, 2) R3 at 2B out on appeal, and 3) R2 at 1B out on appeal.