Running Lane violation

[dileonardoja]

Had a play last night that I have a question about. Men's league, pretty good quality ball. Turf field without a marked running lane. 1 out, no one on, D3K just to the 3B side of HP. B/R takes off for first. F2 picks up ball and makes throw directly over B/R who is running completely inside the foul line. F3 jumps to make catch and comes down on bag as runner touches the bag. I have an out and sell it.

Question is if I didn't have an out, could this have been interference even though the throw was high? In my opinion it was high because the catcher was throwing over the runner. The runner was basically taking away the inside throw and based on where the ball ended up an outside throw would have been a little impractical. What is the correct mechanic?