Whenever a report is made about inappropriate language, the Devs always check the chat logs and look at *all* sides of the conversation. If I remember correctly, it even warns you of that when you go to make the report. Make your report or, if you have screenshots, you can email them to the support address (support(at)spacetimestudios.com, replacing (at) with @) and put them on ignore if you feel like you might be tempted to fire back. If he made a false report about you, well....that can come back and bite him.

You might want to avoid making threads like this in future--they can lead to flame wars. If someone is jerky by nature, then others will report him if they see him misbehaving; they can't report him based on someone else's report of jerkitude. ;-)