TOM are operating SFB for April only, one can only assume that sales for that route aren't meeting expectations which is perhaps no surprise given the ridiculous increase in capacity to Orlando for 2016. I agree that TCX's 2017 schedule is a better mix.
Cancun is being operated throughout the winter by TOM which I didn't notice before so becomes STN's first year-round long haul destination in some time. They also have a one-off flight to Barbados.