While his time in College Park has included memorable success — Da’Rel Scott has take-your-breath-away acceleration in the open field — it has also been spent navigating around obstacles. There was the shoulder injury that limited him even as he rushed for 1,133 yards in 2008, becoming the first Maryland back to top 1,000 yards since Chris Downs in 2002. There was the suspension at the end of that season for violating curfew. There was a spate of fumbles early in 2009, followed by a broken forearm bone that sidelined him for nearly half the season. Long before that — when he was in third grade — there was his father’s split from the family, the ensuing feelings of anger and abandonment and, later, the slaying of an aunt with whom he was close. Scott, who competed as a sprinter during the indoor track and field season