Original sentence: Grant Morrison fans also remain unhappy at what they see as Marvel maliciously unwinding Morrison's story, while ignoring the impact of the story on other writers' plans.Grant Morrison had intended Xorn to be the real Magneto.However, knowing that what he had planned for the character and the school wouldn't cause behind the scenes problems, he deliberately sent in his scripts at the last possible moment, to minimise the chances of being asked for rewrites (the New Mutants writers, whose book was also set in the school, only found out that Morrison had destroyed the school when New X-Men #147 came out).Some confusion has arisen, however, due to the somewhat chaotic way Marvel went about this reversal, in two seperate comics, and without complete answers as of yet.Unhappy with the treatment and death of Magneto, wanting to allow other books to get back on track, and wanting a Xorn, a marketable new character, around; Marvel then reversed several of Morrison's decisions in the Planet X arc, reconstructing the school immmediately and reintroducing Magneto (in Chris Claremont's new Excalibur book, while establishing that he never left Genosha after it's destruction), and a new Xorn (in Chuck Austen's X-Men), while establishing that the new Xorn was the brother of the original and that the original had been possessed by some (unrevealed) force
Edited sentence: Especially the idea of Magneto being capable of killing 5000 people was retconned, too.However, retconning this perfectly sound stories (especially trying to establish that Magneto and Xorn(s) are different people) have caused confusion.It is strongly hinted that the Marvel head staff retconned these plotlines because they wanted to keep both Magneto, the supervillain, and Xorn, a marketable new character, alive.Reading Morrison's interpretation of Xorn in "New X-Men" (spanning three arcs, NXM #135-150), it is obvious that he plotted Xorn to be Magneto.Reading these 15 (critically acclaimed) issues alone, Magneto took the Xorn disguise to subvert the X-Men, form a new Brotherhood of Mutants and went on to kill 5000 people in New York before he was killed by Wolverine