There's something a-fishy going on...
All four of these people got golden wrenches, and all 4 were soon thereafter VAC banned, and their wrenches are no longer in their backpacks/
#1 - kaori's -
http://steamcommunity.com/id/TOASTYEAH/ #36 - Ruke's -
http://steamcommunity.com/id/rukes/ #58 - DF's -
http://steamcommunity.com/id/df/ #60 - ChrisFPS' -
http://steamcommunity.com/id/ChrisFPS/ Drunken F00l is the guy who made TF2 Items and a bunch of other stuff (I think he's involved with tf2lobby). People think somehow since he's done so much work with item drops he found the formula at which the wrenches dropped. (Since random is never really random...most of the time).