The only way you could have been VAC banned is by running an "outside" script for that server and or whatever others...
You can not and never were able to be VAC'ed by internal methods. IE: CVAR
VAC's are also delayed at a minimum of 1 week....

Testing of dem bhop hax? http://www.ibisgaming.com/forums/sho...271#post168271

You would of been better off with a stand alone *cough*yarrrrr*cough* version of CS:S