Interferance / Obstruction

[softballaddict]

Let me first say I saw this through Daddy goggles not my umpire goggles. FED rules, 0 out R1 on 2b, R2 on 1b, F6 playing maybe a step in back of base line. Sharply hit ball up the middle, maybe 3ft to F6 side of 2B. R1 and F6 run into each other. From view in stands, I thought ball was past F6 and she had no play on the ball anyway, and should have been OBS. BU call R1 out for interference. Fans on our side go nuts. I realize this is HTBT territory and I try to be objective, but any chance this could have been OBS? I do ASA and couple other alphabets but not FED.