I think he should have been sent, but that is somewhat hindsight. It was 3-2 count with 2 outs. Eaton and Duran were already running on the pitch. Knowing that and your runners, seems so obvious now.
With Story on deck, maybe you can say holding up is wise? And of course, if Story pulls that ball to left (instead of center), Grand Slam in that joke of a little league ball park...