There are a number of factors to consider when talking about lag. Your ping was around 200 ish, this shouldn't cause you lag up to the extent you were. What do you have your rate and maxpackets set to?
As for actions to invoke a ban, here on Vogon cheating is looked upon with a very disapproving eye, but most of the time if a player is banned for cheating and then (possibly after a discussion) stop cheating they are usually allowed back to enjoy the servers. Grossly insulting or abusing other players is not allowed either. However, no one will be kicked for friendly banter so feel free to enjoy the odd heated debate or two, common sense should tell you where to draw the line.
In fairness I did warn your brother several times but he did not respond, I kicked him and he still made no effort to rectify the problem so unfortunately a ban was the only option left open to me at the time. I appreciate this may have been due to a language barrier. It is not our aim or goal to ban anyone but you/he cannot play with a connection like that, I observed EpoxiUretans movements from other players perspectives and you/he disappears/reappears etc etc and are virtually impossible to hit - which is unfair on other players. We have some very good FFA players here and EpoxiUretan was continually trouncing them because his lag was making him so difficult to see/hit.
Make efforts to fix your connection, you do not need to lag up that badly, we have other Russian players who do not experience this problem which is one factor that indicates your lag is artificial ie deliberate, although I appreciate Russia is a very big country. If this is not the case you should be able to rectify the problem with relative ease.
Let me know of your progress,
PS, this is unlikely but if you are downloading in the background or have a lot of bandwidth intensive apps running whilst trying to play Q3 your connection will lag horrendously (unless you have a very fast/high performance connection). It happens to me, if I am downloading then I will lag up pretty badly. Hence, I do not download or have any other net intensive apps running. And I also have a shitty connection to start with.