I emailed Jeff Mantz again to see if there was any update on my proposal. I received a reply today (12/19). At least in my case, NSF has not received all the reviews and it will take another week or two before they make the final decision. I hope this helps.
Following Elk4's suggestion I also contacted Jeff Mantz and was told on the 11th that he didn't have enough information about my results. He said they would need a couple more weeks to finalize the recommendations and it's unlikely that they would be able to send us results or review comments quickly enough to permit the January 15 resubmission.