I will also count myself as amazed if Ryanair arrive back at Harbour. FlyBe going head to head with Easy at Aldergrove is only going to have one winner and I don't think you need to be a genius to work that one out! Big shiny jet versus constantly broken clockwork plane, give it a few months till passengers work it out themselves and its not going to end well.
I would be very sceptical in thinking Mr A has any massive pull with any airline, Ryanair or otherwise. Ryanair in particular are very shrewd operators and will go where the deal is right for them and pull out when it isn't, as Harbour well know!
It will be interesting to see how this develops, a LGW route isnt really going to harm anyone at Harbour, will Ryanair be content with one route though or will they step on a few toes as time goes on?