oversliding second

[ecurebel]

In a Babe Ruth game I saw this play last night that i was watching but not working. with less than two outs R1 on first base is forced to go to second by batter/runner. R1 overslides second base purposely breaking up the double play and taking the fielder out. the base umpire did not see this because the bag had already been tagged and he was moving into position to view a throw to first for the double play. he realizes the ball was not thrown and the two players are laying on the ground. if he did not see the play at second can the plate guy make a call on it? or does the base guy have to appeal his call at second for a double play interference on the runner to the plate guy since he could not see the interference?