Paul Finkelstein, the former longtime CEO of hair salon operator Regis Corp., has resigned from the company's board of directors. He is leaving earlier than planned. When it was announced that he would step down as CEO in February, the company said he would stay on the board until late 2012. Edina-based Regis (NYSE: RGS) said in a statement Tuesday that Finkelstein resigned as a director and as executive chairman on Monday. Joel Conner was immediately named independent chairman of the board. He...