I suspect that IOM-STN and NCL-STN are gone completely. Certainly the IOM schedule looks complete with MAN/LPL/BHX all being covered by two IOM based Stobart ATR-72's, and with, on the face of it, no Q400's reaching the Island, at all.
With the cutbacks at BOH, it looks as though whatever deal they had with MAG over STN and BOH may have run out.