SAN FRANCISCO (AP) — Yahoo's recently fired chief operating officer, Henrique de Castro, left the Internet company with a severance package of $58 million even though he lasted just 15 months on the job. The disclosure in a regulatory filing may lead to more second-guessing of Yahoo CEO Marissa Mayer's decision to hire de Castro as her second-in-command in October 2012. Mayer dumped de Castro in January after concluding he wasn't executing on her plan for reviving Yahoo's lackluster ad growth.Read more on NewsOK.com