just pondering

[Umpire_Jeremy]

The correct mechanic would be as you did...

watched the play VERY CLOSELY...turned around to look at your partner and wait for the appeal (I assume that you expected an appeal from him) and give your decision.

If you think he went you ring him and then call the runner out on the steal. Shouldn't have too much of a problem, especially in a legion game where, at least around here, most of the coaches know the rules pretty well. You, in no way, put the runner in danger.

I think that you did it correctly.