I could forward the confirmation to you, MB (with the personal info concealed of course) if you wish. It says "Dark Shadows" under the heading for rate information. I have one of those Rewards cards, but the confirmation doesn't indiciate whether this was even factored in, except for points. The rooms normally run at least $200, so it is some discount. I don't think calling the main number had anything to do with it, as I have always called the main number first anyway and never had a problem. I too was taken aback by the increase, but (like many attendees) I'm looking for 1 or 2 room-mates and flying won't be necessary for me this year, so it's doable.
Still, if anyone does get a better rate, please let me know so I can call them back and haggle over it. I'm not afraid of a good fight--- for a bargain!