Bruins greats Derek Sanderson and Bobby Orr were together again Wednesday, just not on the ice. The friends and former teammates on two Stanley Cup-winning teams got together at the W Hotel to talk about “Turk,” the movie based on Sanderson’s life that actor Edward Burns is hoping to produce. Burns, who is expected to play Sanderson’s dad in the film, was also there, as was Doug Atchison, who’s on board to direct.