Gaiman included a few "final" thoughts on copyright. Given how much he's involved himself in the discussion of these issues over the years I seriously doubt this'll be his final word, but perhaps he feels he has no more to say on the Rowling case.

In this entry he's reflecting on his own copyright battles with Todd McFarlane over authorship of certain material that Gaiman wrote. He also links to the judge's decision in that case. There are no real parallels that I can see, and Gaiman says as much. Still, it does point out that he has first-hand experience of someone trying to steal things he wrote and that there is a framework within law for dealing with such things - where such framework does not include Ms. Rowling's emotional appeals to 'think of the charity'.