You do know they were only actually scheduled to operate one return flight today - the other 3 being Blue Islands (who also seem to having their own ATR woes) operated code shares?
Our office has already had several round trips to/from the island to both LCY & DUB this year, and I'm using LCY next month for onward connecting flights, and have EDI booked for later in the year too, so there's demand ask far as I'm concerned. If you're upset at Aurigny I'd suggest you don't try and book Condor Ferries...