M. Night Shyamalan Ghost-Wrote 'She's All That'

Now this is a real third-act twist in the vein of a, well, M. Night Shyamalan movie, that is.  In a recent interview regarding his latest movie, After Earth, the writer-director admits to ghost-writing a 1999 teen comedy: She's All That, starring Freddie Prinze Jr. and Rachael Leigh Cook.
Shyamalan: I ghost-wrote the movie She's All That. [Laughs]
Does this boost Shyamalan's credit a little bit?  After all, his first few movies (The Sixth Sense, Unbreakable, Signs) were top notch.  After that they sort of fluttered (Lady in the Water, The Happening).

Source: Movies.com