The argument may be academic anyway. According to a reply to someone on the EZY FB page asking if the EDI route would stop in June:
easyJet wrote: "Hi Neil, according to the information we have this route will still be available all year long. Hope this helps, Clarissa."
Now I know that the EZY guys replying to FB requests don't have the full picture by any means, but I would have thought that she would have said that she did not know the answer rather than what she did.
Certainly the load factors (not yield, I know....) in December have been high on the SEN-EDI flights.
In reply to another chap asking if any new routes were to be offered from SEN during 2014 EZY replied:
"Hello John, Yes, we do. Please keep an eye on our profile as we'll keep you informed as soon as we have an update."
So, make of those replies what you will.....