I must admit, I did think of Jet2 after putting FlyBe due to their Newcastle - Cork flight, but I would be GUTTED if they axed DUS, it is one of the routes that I fly on the most these days, but it does seem to consistently be their lowest fare from LBA and that combined with up and down loads can't be good.
I'd be interested to know what the average loads were on this flight. That would leave LBA with only Weeze via Ryanair, which is NOT Dusseldorf, it's miles away, and for me would result in a trip over the Pennines and a flight to Cologne / Bonn with German Wings, as much of my time I'm in Cologne for business anyway.
I really wish a budget German carrier would come into LBA and open up the country a bit more.