Happened upon this pricing glitch.
For most Sundays throughout the booking calendar, when booking BOS-LAX, if a connection via MCO is listed, it will frequently be the lowest priced option, e.g., 9,500 or 10,200 points.
But when you click through a few screens, the price drops to roughly half the price, like 4,500 or 5,500 points.
This lower price remains in place through the confirmation of booking.
I have only checked Sundays and only BOS-LAX.
Didn't seem to work when I tried other connecting cities (e.g., MIA, JFK).
