Rich Ives on the Baseball Forum addressed this in a manner that I think would also be applicable to fast pitch softball and baseball under all rule sets (ASA, USSSA, NFHS, NCAA, and OBR).
1) The batted ball is not a fly ball.
2) The ball is neither a Foul Ball or a Fair Ball just prior to the contact between B/R-1 and F3 who was attempting to make a play on the Ball.
3) The Ball was touching in Foul Territory when B/R-1 made contact with F3. who was attempting to make a play on the Ball.
4) B/R-1 has committed Interference with F3. The Ball becomes Dead immediately. B/R/-1 is out because of committing Interference. All runners return to the bases they occupied at the time of the B/R-1's Interference.
5) B/R-1 can be ejected for Malicious Contact and/or Unsportsmanlike Conduct in some rules sets.
MTD, Sr.