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Rod Thorn, the NBA’s dean of discipline, has a tough decision to make. Should Dwight Howard’s elbowing foul against Andrew Bogut from Game 4 of the Western Conference finals be upgraded to a flagrant-2, which would force Howard to miss Game 5. The precedent is there, whether it was Al Horford getting ejected from Game 3 of the Atlanta-Cleveland series or J.R. Smith getting suspended two games for elbowing Jae Crowder of Boston during the first round. Elbows to the head are a