GREEN BAY, Wis. (AP) – The Green Bay Packers are still backing struggling kicker Mason Crosby.  Both coach Mike McCarthy and special teams coordinator Shawn Slocum were steadfast in their commitment to Crosby on Monday, despite the fact that he’s made only six of his past 13 field-goal attempts.   “I have confidence in the plan as we move forward,” McCarthy said on Monday, one day after Crosby missed 50 and 38-yard field goals in a 24-20 victory over the Detroit Lions.        “Mason … just needs to trust the process through his preparation and stay focused on that and carry it through as far as his performance.  “Mason Crosby is my kicker. So, we can just stop it right here.”