Marc Trestman tiptoes around Brandon Marshall

That ugly interception thrown on Sunday by Bears quarterback Jay Cutler was the fault of receiver Brandon Marshall.  Unless it wasn’t. After Sunday’s 21-point home loss to the Packers, Chicago coach Marc Trestman pinned the blame on Brandon for running the wrong route, a hook-and-go instead of an 18-yard button hook.  On Monday, Trestman changed…