I was arrested when someone I know claimed I ran into them on the street and pulled a knife on him and his friends. He claims to have witness's. I'm facing a slew of serious charges. The thing is, I have a sound defense, I was at my college in class at the time I was supposed to have been threatening him with the knife. I can prove it. My question is, will this be enough to prevent this from going to trial? If so, will he be arrested at court for lying, or can I have him arrested?