His comments did indicate it was a possibility. Basically he wanted to get Duran in as early as possible and play it by ear from there. That's the questionable part for me. It absolutely made sense to me to have him face the top of the lineup. And it's reasonable to try to get some more outs from him given general BP unreliability, but it would have been more defensible to just use him for the 7th against their best hitters, then move on. Completely diverging from normal process just because it's October isn't necessarily going to work out well.
Obviously hindsight is 20/20.