chuck (someone or something) overboard

To dispose or get rid of someone or something, especially in an improper manner. Likened to throwing someone or something over the side of a ship. In a major corporate shake-up, most of the company's upper-level management was chucked overboard at the end of the fiscal year. I know it's a really bad habit, but we just open the window and chuck our rubbish overboard when traveling on a long car journey. A: "If the team keeps losing, you know the GM will chuck the coach overboard." B: "Well, sure—he can't fire the players."