We are a small team who performs software development and support services for other teams within the organization. My manager is the leader of this team. One of our "clients", another team lead in the organization, was in a meeting with my manager and I. A disagreement in the meeting escalated to where I was asked to leave the room and my manager began "chewing out" the other team lead, yelling loud enough for the entire office to hear.
What is the best course of action to intervene to assist the recipient of verbal abuse when my manager is the one performing the abuse? Should one wait for the conflict to play itself out, or try to defuse the situation somehow?