The news comes only weeks after Australia swept England in the Ashes series and months after winning the T20 World Cup. After failing to garner the public backing of major players and difficult contract talks with governing body Cricket Australia, the 51-year-old walked away from the top managerial role in Australian sports. Board members debated Langer’s future until late Friday night, but were unable to reach an agreement on a new contract with the former Test batsman. The coach is said to have bristled at being asked to effectively reapply for his job and being offered a “short-term extensi…