Spencer overplayed his hand waaaay too quickly. He also forgot he’s not talking to a human being.
Spencer’s got no guts.
The moron Spencer does not have any brains to think that Negan believes he is the only “Leader” and only him. Spencer telling Negan that he wanted to lead Alexandria because of his mama. Wronggggggg....One never tell a dictator that he wants to be a leader because there is only 1 leader. O well, at least Spencer had the guts to tell him that.