[waltjp]

Sit 1 -

You're correct, R1 is out. B/R to first, R2 remains at 2B.

Think of this situation - bases loaded. Batter grounds a ball toward F6. R2 is hit with the batted ball while passing in front of F6. The ball is dead, R2 is out.
B/R to first base.
R1 is forced to advance to second base because the B/R is awarded first base. R3 returns to third.

Sit 2 -
If the umpire judges the interference to be intentional he could declare the batter out and complete the double play. R1 would return to first base if the inning is to continue.