Wait, we messed up on the same option hahaha! I also thought that letting Sal punch Dean was the correct choice since it was for Orlando! But then in another scene, he mentions that he apologized to Dean which made me think "Wait, did I choose the right option?" He looked like he regretted going overboard by punching Dean which made me go back and stop him from doing so.
Then, after stopping him, I realized how it was completely obvious that stopping him was the right choice. Sal isn't a violent person by nature and that his anger just got the better of him because the conflict revolved around Orlando being upset due to Dean. So yeah, hahaha
On a sidenote, sorry for the lengthy reply haha I tend to go off on a tanget with these type of conversations haha