Interference?

[DG]

Tell me more about the BR pushing the fielder to the ground part?

If we don't rule interference for BR interfering with a fielder reaching to pick up a batted ball in foul territory near the line that has a chance of going fair and it rolls into the bag, how can we rule foul ball?

If it has no chance of going fair then I would think foul ball, and of course the part about it rolling into the bag would not have occurred, but I would still like to hear more about the push to see if there is something more I need to take into consideration.