Thanks for linking it. Judged subtextually from e.g. "Planned transition paves a smooth path for the fall opening of the new Institute" I'd guess policy-differences.
But indeed without information it'll stick at guessing, whereas I doubt either WPI or Dr. Peterson will be willing to clarify the issue, for the time being, at least, so as to remain on "a smooth path for the fall opening of the new Institute".
Is again my guess and indeed may also be the wisest move for them if they have different ideas about what WPI should be doing (first).