An old player, I've seen him in ddust2 since 2012, and has started playing there even earlier, I believe.
In my opinion, Max might have banned him because of hatred or repetitive admin chat reports "he wh! he wh!"
Whenever I spec embraco, his gameplay always seems different from everyone else's, though it doesn't mean wallhack.
Also, when shooting walls, he usually spams this /me to know, where to keep shooting to get a kill. That's like a legal wallhack lol.