I'm a little confused Len. So you witnessed 5 teamkills that occurred, correct? And I see that he also has another ban on record. With that previous ban and 5 teamkills I don't think a permanent ban was just. Perhaps a week or two for this. Seeing as how I don't know/see how many teamkills you provided in the ban description for his first ban. Just my thoughts.
7 total, just in with what Wellrgr (former admin) supplied and I saw when I joined the game. Potential for 12 total just that game (I believe 14 total + an immense amount of team shooting), and with the previous ban, more than qualifies him for a perma, imo. *Sorry, mistook him for the wrong guy.*
The time that I banned him before, he joined, immediately started team shooting (not tking) as many people at the start of a round as possible. This went on for multiple rounds until he finally started TKing. Rather than let him go on a spree, I banned him for the 2 TKs he had already done + the massive amount of teamshooting.
I honestly don't think this guy intends on legitimately playing the game, and instead cares more about trolling other players.