T.F.
I think you are right about him talking to the leader. I don't understand why some people say he shouldn't apologize. Accidental or not, he made a mistake and a simple apology is proper manners. He will feel much better and will be able to forget about it. Trust me I know! I make a lot of mistakes! :-). Maybe you can role play the apology? Both seriously and then make it funny and outrageous like having the leader telling him, "Drop and Give me 20!" Also ask him how he thinks the leader will respond? This may be the scary unknown. He can also say as part of his apology, "I'm so embarrassed" I feel so bad, his words. Hope this helps!