It doesn't say anywhere in the article that Manfred yelled. (Nor Castellanos, although I think your "him" refers to Manfred.) As for cursing, Manfred just repeated what Harper said to him. There might be additional reporting somewhere that says that Manfred yelled and used some salty language other than what's reported in the Yahoo article; that's possible. ¯\_(ツ)_/¯
I don't know anything about Manfred. Maybe he often acts like an immature cowboy, or a calm, reasoned, tough negotiator who is used to dealing with the huge, unruly egos that are hard to avoid in young men with high testosterone who spit on the floor, have staff to clean up after them, and already have more money than most of us will ever see in our lifetimes. I'm not trying to make excuses for Manfred, just trying not to read more in the article than is there.