What if Tony Montana had done Alejandro Sosa the favor and had helped Shadow assasinate the activist, his wife and kids, instead of killing Shadow?

Alternate scene

Tony returns and meets Sosa after the assasination
Sosa: Thank you, Tony. Great job, my friend.
Tony looks devastated and angry.
Tony: Fuck you! I am going to hell because of you.
Sosa: Tony, you have done a great thing for my business. We will do great things together.
Tony: I am going to hell!
Tony sits down, with his head in his hands.
Sosa: Tony, can I count on your loyalty? I don't want a reason to question your loyalty, Tony. I need you to work for me.
Tony looks up, very angry.
Tony: I killed a woman and her kids! I only have one rule. No woman and kids!
Sosa: You did what you had to do, Tony. Can I always count on you to do what is neccessary?
Tony looks up, baffled.
Tony: What the fuck are you talking about? I killed a woman and her kids for you. I am going to hell, and I did it anyway. And you doubt me? Fuck you, Sosa. Fuck you!
Tony then hits the table in agony.
Tony: I will be your top guy until I die, and then I will spend the rest of my fucking life getting butt-fucked by Satan, all for you ... and you doubt my loyalty? Fuck you!
Tony then storms off, breaking a few things, looking tragic.
Sosa calls over Shadow: Watch him closely, Shadow. Watch him closely.
Shadow looks angrily over at Tony and starts to aggressively follow him.
Sosa: Wait a fucken moment!
He pulls Shadow over.
Sosa: Take care of him. Make sure nothing happens to him. He is my top guy, and you work for him now. I am worried that he might hurt himself.
Shadow calms down;
Sosa: If he hurts himself in anyway, you are dead, my friend. If he dies, you die. Understand?
Shadow nods obediently