• by Joe Mandese  @mp_joemandese, February 22, 2011

Less than a week after Jack Griffin was ousted as CEO of Time Inc., Randall Rothenberg is leaving as chief digital officer of Time Warner's publishing division to return to the Interactive Advertising Bureau as president-CEO.

In a staff memo, Time Inc.'s interim management team indicated that the decision to leave was made by Rothenberg, and that he was considered "a valued and collegial member of our management team and hoped he would stay."

The Time Inc. team said the organization was "redoubling our commitment to the IAB," and announced that Time Inc. will become a charter sponsor of the association's new IAB Ad Lab and of the IAB's "important cross-industry measurement standardization initiative, where we will take an advisory board seat."

The Time Inc. team did not indicate whether the chief digital officer slot would be filled.