Remember there is only 3 YVR-OGG flights a week and they are flying it using 762 so there's only about 130 seats available on each flight.
This means there are a total of ~1560 Y seats the entire month, so based on what AC told us recently, there should be around 150 award seat available? Have you thought about just using the award to get to HNL and then buy a cheap inter-island ticket? I believe Feb is high season for Hawaii so some sort of "hidden" blackouts by AC?