After a Philosophy debate, one of my friends got 600 warning points. Just for calling them an 'Imbecile'. Why do the Mods have to be so strict. They can settle things in their own matter. I'm sure if you let them, they can come to some sort of conclusion.....
If he wishes to dispute the warning, then he is free to bring it up in a mod dispute. However, don't stir up drama over it, especially if the drama involves false information.