CSD, two blog links and a link to a USA Today story that used a blog as a source does not constitute "confirmation". I can post a blog story about how it didn't happen, and Fistful and drewtam can do the same. Voila--confirmation that it didn't happen!
This was the RNC presidential convention, for crying out loud. The woman supposedly pelted with peanuts was a camerawoman, which suggests to me that she had the means to record the event just by pushing a button. I would think there would have been other still or video cameras nearby.