I believe so.
I have a feeling it had more to do with the Flight Alerts:
Specify up to 20 flight segments to monitor for new availability in the class you specify.
ExpertFlyer will periodically check for availability and notify you when availability is found.
Up to three email addresses may be specified. Supports email to cell phones, PDAs and other portable devices.
One enters Origin, Destination, date, Carrier, Flight number, class and required number of seats.
You receive an alert when all conditions are matched.
This enabled those with tools like E/F to get the jump on "your normal Punter".
E.g. One used to be able to enter, say, MEL to LAX, U class QF93 etc ...
Obviously, this function no longer works for Qantas in U class.
FWIW, AA have withdrawn X class from bing viewable until 24 hours before a flight for similar reasons. X class is the Elite "Free"/Sticker Upgrade class from Coach to First on 2 class domestic flights.