VAC Banned

Alright.
Let's start over.

VAC is a useless Anti-cheat.
anyone with Basic C++ Knowledge can make a TF2 Cheat and Bypass VAC with Ease.
VAC is also banning for no reason on Modern Warfare 2
The best version of the Valve Anti Cheat software is in CS:GO

VAC On CS:GO is a different story.
in many cheat sites,you'll see bellow "VAC3 or VAC4 [for cs:go in particular] Undetected" in the "Cheat Status" box
VAC4 on cs:go Updates every 2-3 Seconds to send fresh data on the server
Whereas VAC on TF2 is the same program which the last update happened on: The last time a VAC Wave happened on Lmaobox.
AKA May 2014
(Source: Lmaobox forums)

You only get VAC Banned on tf2 if you use a Detected Cheat or Cheat Engine
There's No such thing as: "I got Vac banned for no reason"
Valve's policy on Cheating is also Wrong.
if you get VAC'd because the Program is Faulty (Basically,Valve Anti Cheat screwing up on itself) then you'll get unbanned if you go to Steam support and Whine enough about it. (Yes,they'll actually answer you after you persuade about it and of course PROVIDE the correct proof)
There are over 100 People that have been Unbanned from VAC
(Source: http://vacbanned.com/ )

TL;DR
You either used a Detected cheat or VAC is Faulty. (Which there were no more cases reported with Valid proof after the 2013 Patch)

 

That's great, I wish to congratulate you on returning back to Team Fortress 2!

 

I'm surprised, never heard of anyone getting their VAC ban removed. Now if only they would remove mine.