By Albert Breer With imports from the 49ers, the head coach has his team riding a three-game winning streak. Plus, another new hero for the Giants, and the Colts—believe it or not—are tied for first in the AFC South. On ESPN’s pregame show, Rex Ryan told a story we covered in the Sept. 5 MMQB—one that explained how the outgrowth of Ryan ripping Jets coach Robert Saleh was a conversation between the two that led to material changes in the team’s roster. Ryan explained to Saleh the value he got in bringing program guys such as Bart Scott and Jim Leonhard with him from the Ravens to the Jets and …