Oakland Tribune editor Mario Dianda has been stripped of his position and transferred by MediaNews to run the Pacifica Tribune, a weekly in San Mateo County, according to the East Bay Express. The Express quoted one person in the Tribune newsroom as saying the news hit the staff like a ton of bricks, leaving everyone with a sense of betrayal and anger. The anonymous staffer said Dianda’s demotion confirms the impression that management is turning the Tribune into a bureau of the Contra Costa Times, which MediaNews acquired in August.