So why is it mentioned in the book then. Why would J K say there is in one book and isnt in another. If she did it on purpose then maybe there is a charm to cure him but only lockheart knows about it and now hes lost his mind. But the wizard that did do the charm (he took credit for what other wizards had done) now dosn't remember, but the memory charm can be broken right?
But maybe J K didn't do it on purpose.
I dunno