Sanford probably will return for peak season
A one-off departure is currently on sale from BFS, 5 July 2012 for 14 nights, bookable on Thomas Cook website.
Rumours that EZY are to offer some news routes from Belfast were mentioned a few pages back, and PRG named as a potential. Personally I would have thought Berlin was a safer bet with business links into Germany, leisure travellers visiting the region and as a gateway to Poland for local Poles travelling back to their families. IIRC Berlin flights did last a good few years at BFS.