By Tzvi Machlin Never let it be said that Dallas Cowboys head coach Mike McCarthy won’t do everything in his power to be with his players. After getting surgery on his appendix just two days ago, McCarthy was back at Cowboys practice on Friday. According to Michael Gehlken of the Dallas Morning News, he returned to the facility this morning but had been in contact with the team since yesterday. “Cowboys coach Mike McCarthy returned to team facility this morning as planned following Wednesday surgery to address acute appendicitis, a team official said. McCarthy stayed connected while away betwe…