Bases Loaded - Double Play attempt- Obstruction

[largeone59]

Well SFN, i'll take a stab at this:

Sounds like R1 violated the Force Play Slide Rule by illegally sliding into second (NFHS reference 2-32-2a). The correct call here would have been INTERFERENCE, not obstruction. R1 is out, BR is out since it prevented the double play. Two outs

As for R2 and R3, they go back to the bases that were last touched at the time of the interference, so R2 would go back to second, and R3 would go back to third.