You know I'm not questioning your decision here - I just knew it would show that there was a reason you went and that all of the back-seat umpires who question such things should just listen
I agree: Bases empty? No brainer, go with the ball. If two umpires can't handle one runner, then they don't belong on this game. If there's a tarp and bullpens and banners that can cause problems, well, then just go.
Now, to continue, if it was R1+R2, would you have gone? (I find this question more interesting actually, since going on your play is really a no-brainer once you now the bases were empty).