My follow-up // VA + TSA = Fail
Long story short, presenting the card from CBT is useless. If the QR code associated with your boarding pass doesn't have the Trusted Traveler number encoded on it (giving 3 beeps), TSA doesn't care a single bit.
Didn't work at IAD.
Didn't work at SFO.
My plan is to not fly Virgin again until they can get it together. Back to Delta I go. I am looking forward to hearing my 3 beeps on Monday (for a Delta flight) and bypassing the whole mess.