After I lost this match, every time I'd be up for a match, it would disconnect me, and everybody from the server.
This was snapped by Adamant, and in the chat box too you see that it disconnected him, too.

EDIT: Virus has left, played some matches with nothing suspicious

Could this have been done with an admin use /echo?

I don't know, but every time I go into a server, it disconnects me when I go up for a match. I'm thinking it's for the deadly games, but I'm not in the deadly games as Adamant is (was).

edit: The admin at the time was mastergabe.
2nd edit: This happens in all versions
This is only happening to this account, not others.