That's odd. I've used the FHR program a fair number of times, and I have never had that happen.
Just out of curiosity, I just checked to see if Virtuoso rates are available for a 1-night stay on December 8th, and they are! Makes it even more strange -- I would think that if they are offering Virtuoso rates, then they'd also be offering FHR rates.
Let us know how things turn out.