You need to know at least one thing. The bit with the usher at the door was part of the play. Your recounting of it says nothing about the presenter's capability nor Ms. Finklestein's personality. All involved in the presentation will survive your misjudgment. What I'm worried about is The Dance Insider itself.
Dance needs the timely coverage and the multiplicity of voices.
We are sorely lacking a forum, and so it is important that your enterprise thrive. To have its credibility and therefore viability undermined so pointlessly by its own editor is cause for concern. Two safety nets failed you. But as you so animatedly point out in Ms. Finklestein's's case, no one is perfect. Now that you've learned something, you'll do better next time, I'm sure.