This week, while NBA coaches pick the All-Star reserves, the NBA will pick the All-Star coaches. Neither task is as easy. David Blatt’s dismissal as coach of the Cleveland Cavaliers has added a bizarre twist to next month’s All-Star Game in Toronto. The Cavs have the best record in the Eastern Conference, which means their staff was on track to coach the East All-Stars. But Blatt has been replaced by Tyronn Lue, who will coach just five games before the deadline of