Bit of spin I suspect.
Not being competent to argue technical matters I can only repeat what an airline pilot wrote when the matter of flying non-stop to Florida was discussed on PPRuNe last year.
He said that for the most part the former First Choice 767-300s with fewer seats than the tradtional TOM models would be able to make it non-stop but there might be occasions when weather or other conditions dictated an en route fuel stop.
I believe that the service did operate non-stop in summer 2009 most if not all of the time but, unless the airport has sneakily laid your runway extension overnight onto Felton Common hoping the locals wouldn't notice, I presume the caveat re weather etc will still hold good in 2011.
I guess the new Enfidha Airport is merely a switch away from Monastir just up the road by some carriers/tour companies.