Hi
It is possible to make accounts on your computer, refusing access to the game for anyone whos not admin/or your account. There are also ways to password the game, in the OS or with 3rd party programs.
You were banned after playing for some time. You were complaining about leechers, and that admins didnt do enough about em, because a couple of people were stading on the spawn for 15-20 secs in start of round. So you (or your brother) stated that your tired of playing this game and is quitting, started to massacre people (I presume they were standing still on spawn).
This is my first essay-ban. Write 250 words(shortest essay so far),in our own essay forum about why you wanna play and convince me you want to play, and Ill unban you.