Yea, he's definitely hacking. There seems to be another hacker that disconnected after he was discovered. The next time he's online I'll make note of his username. These cheats are pathetic.
I decided to click on the "Verify Integrity of Game Cache" button on Steam. I don't recommend doing this. It hosed all my online profiles and started me back to square one for rank, challenges, etc. So now I loaded up my old Ego-Bruiser account and that's what I'm currently using on this server...
I finally got registered on this site, yea! I want to say I hold nothing against spit-flame. I get accused of cheating all the time.
By the way, this server rocks! Very well run and the website is cool too.