We were on the Feb 1 flight returning to Toronto as well. Looks like WJ is just dropping all the Tuesday flights and moving them to the Sunday. When I looked at seat map last week it seemed like a lot of seats were available, maybe they are seeing less demand due to Canadas travel advisory. We ended up moving to a connecting flight thru NYC on Feb 1 return (didn't want to lose 2 days in SXM). United had space earlier this week.