Interference or not

[DG]

Since Carl asked this question there has be some supernatural reason that the obvious is not the right call, but to me the obvious is no call, since there is no catcher who ever lived who could throw out R2 at 3rd after the ball gets away from the catcher and trickles to the dugout lip. So the player who was trying to get out of the way did not interfere with anything, intentionally or unintentionally. This player could have been the on deck batter, or someone in the dugout who was moving and tripped into play area. It's not clear who this was from the post.