While it's not clear why Proebstle was replaced, the move solidifies CEO Brian Tierney's control of the former Knight-Ridder paper, which PMH acquired from McClatchy in June 2006. Since then, Tierney has replaced every top executive at the Inquirer, including Editor Amanda Bennett and Publisher Joe Natoli, although he claimed last year that he wanted Natoli to stay. (The former publisher is now CFO of the University of Miami.)