These are just the initial statements of the four presenters, posted courtesy of the JTA's digital media staff. Still, I think they give you a clear idea of where each person stands and how valid his stance may or may not be:
Rabbi Avi Shafran, spokesman for Agudath Israel of America:
Rabbi Menahem Genack, CEO of OU Kosher and a rosh yeshiva at Yeshiva University:
Rabbi Basil Herring, executive VP of the Rabbinical Council of America (and, I think, the only rabbi worldwide whose first and last names are also names of a food):
Shmuly Yanklowitz, co-founder of Uri L'Tzedek:
Chana over at The Curious Jew posted her notes from the event, which include most of the question and answer session. So you best bet is to watch the videos and then read through her notes.