While I agree that it will not be a major hiccup in the grand picture of things, it nicely shows the problems of franchising a brand. The media will now report along the lines "Flybe's new route to CGN cancelled after only six days". "Flybe axes new Cologne link before it even started" - and this with Flybe being totally innocent and not involved at all.
I guess we can be sure that CGN will be crossed off the airport map hanging in the Stobart office for the foreseeable future