Former Miss USA Shanna Moakler, who won the Miss USA in 1995, said she decided to quit following Trump's news conference.

"I cannot with a clear conscience move forward supporting and promoting the Miss Universe Organization when I no longer believe in it or the contracts I signed committing myself as a youth," she said in a statement issued by her publicist. "I want to be a role model for young women with high hopes of pageantry, but now feel it more important to be a role model for my children."

http://www.independent.co.uk/news/world/americas/pageant-official-quits-over-miss-california-move-1685065.html

Moakler complained to him (Donald Trump) that Prejean had been out of contact and had neglected her beauty queen duties to give interviews to promote opposition to same-sex marriage.
http://www.cnn.com/2009/SHOWBIZ/05/13/ent.miss.california.usa/index.html

But that was never brought up at the News Conference