I didn't see the opening ceremonies. Did Vishneva perform Pendleton's "Dove of Peace" or was she just using the bead skirt costume and dancing to different choreography and music? If the latter, perhaps that's why Moses Pendleton's name wasn't mentioned.
I also looked at photos of some of those costumes that mimic the bead skirt. I could be wrong, but they don't look like they're made of beads, but of some kind of rope. I'm just curious because I know that prop very well.