Hi Tyler,
Here is what I know about the flowering of fruit trees: The fruit tree makes fruiting buds in the fall, and placement of these buds is related to how much sun that part of the tree gets. For example on huge old trees, the fruit is set up high in the sun rather than down underneath in the shade.
Sooo, I'm guessing your scion wood came from a part of the tree that would have been in the sun.
If people want flowers in the winter time, they sometimes cut a few branches of their fruit tree bring them in and put their stems in
water in a cool dark closet, and I can't remember how long before the buds will open, but I did it once and the flowers were lovely and such a treat in the winter.