The reason there's a rift between him and Dipoto to begin with is because he fired Scoscia's BFF Mickey Hatcher, because apparently being buds with Mike means unlimited job security. I don't know if Hatcher "deserved it" but turnover in that spot is pretty rampant and to cry about it for like 3 years is ridiculous. Invite the guy over for a barbecue if you miss him so much.
Now, Scoscia is being a sourpuss and refuses to utilize things like scouting reports, spray charts, hitter tendencies that are passed to him by the FO. He's very anti-stat and thinks he's bigger and more important than the guy above him.