Well I am admin in Classic and I have to say my clear opinion about the demo..
In the first hand,I saw some moments that I believe that it was wall hack and some others that it was good gameplay.Moreover I didnt like some wallbangs, like in the doors [with the knife] but I cant say that its wall hack because I have been playing for years cs and I made crazy wbs so maybe it was just the lucky aim or I am wrong and it was wall hack.I cant say something about the first minutes because the demo doesnt have Esp.It was weird when he changed direction when some CT's was coming in the left direction [tunnel].I didnt see aimbot,I am sure about that xD.The most important part in my post is here..:In the second hand,As I wrote in older unban requests when a demo is weird [the player is using wall hack + sound so the demo is becoming weird] in my opinion is wall hack.
In conclusion,if we go in the first hand the demo isnt enough and if we go with the second hand its wall hack.
P.S
As I said to you wheezy yesterday in steam(about the truth) here is what I really believe about the demo and no something like "he is my friend or he is good guy ,lets say that the demo is clean" or something like this