A hacker fucked up my setting in Gmod ....plz help

I was playing on a TDM server, when someone was accused of hacking 5mins later everyones mouse sensitivity, and controls/keybinds got all fucked up. when I walked foward it moved me backward, and when i pressed a key it was binded to say, ban me for 30. I deleted the game, i reset my controls, but every time I join a server everything is fucked up again.

How did you delete the game?

lmao you got caught by HEX

[editline]6th July 2014[/editline]

I went to steam and delete local content

Stop joining the server that fucked you up.

I did

UNITEDGAMERS he tried to load cheats lol