You misunderstood what JaoSming said. He meant that there is an iff editor which can edit the textures, logos of teams and ( I believe) even paint areas as you have seen. And you can download that program at nba-2k.com
However, as of the moment, we cannot edit the positions of those team logos, and the "out-of-bounds" areas.
Anyway, this reply may serve as a bump. So that someone might read this and may even give you some pointers.
