There was an e-mail from FRCteams mid January with the title "upcoming deadlines" that included the following:
"Gyro/Accelerometer Board Deadline: The deadline for requesting the gyro/accelerometer sensor boards is this Friday, January 15, 2007, 5 pm EST. Remember, there is no charge for these boards. If you think that these boards would be an asset to your robot design, please email
sensors@usfirst.org and let us know!
"
I can't recall if was also mentioned in one of the earlier team updates or not. My apologies that this information does not particularly help your current situation. Perhaps someone more familiar with alternative sources for these sensors will point you towards something at digikey or another on-line source with speedy shipping.
Sorry for the not particularly helpful reply,
Jason