What if I might not be very kind with my words, and Morgan might be insulted?
Why would you insult Morgan?
He made everything hard on me with his attitude.
Insulting responses to Morgan's behaviour are the wrong answer to the issue at hand. Talk to Morgan about his attitude instead of being cruel.
Morgan didn't do a good job and I'm responsible for it, no one else is.
I'm sorry that Morgan's behavior caused you trouble. However, verbally bashing someone is wrong and mean and will only lead to more conflict and pain.