How do you socially destroy a guy who is a total jerk?
You can't attack him head on. He will gain simpathy. Social destruction is about crushing his ability to make friends and to appear to others to be both undesirable and weak. You must undermine his efforts where possible and practice subterfuge to always remain both one step ahead and completely out of view.
If he knows it's you doing the attack, he will have grounds for a counter-offensive. If you're upset about an attack that happened recently, you may need to wait and plan while things die down in order to throw him off.