guy is clean , i took a look at him before. Check hi stats too, holds just over a 2-1 ration. A cheater will hold much better stats than that. Dont always base your accusation on score, take a demo and watch someone.
Ive played along side him many times and have also specced him many times but have never come across anything suspicious. just seems to know the maps and an all around good player. ill keep an eye on him though.