[Ras]

I had a joke trade (http://www.tf2outpost.com/trade/3744957) that he reported and sent me a message somewhere along the lines of, "Enjoy being banned." (I wasn't, but I suspect that he's close with the admin. who closed it because that guy has similar trades.) Haha to him.

On the above quote though you are not correct for this reason:
http://www.tf2outpost.com/rules

Rule 9: No trades that aren't trades — this includes any form of donations, asking for crates to unbox, building up one weapon to an unusual, etc.

There was specific mention given one week by Suttles towards creating "joke trades", so one would assume your trade was closed for this reason alone. In fact its quoted in the "reason for closing trade" note by the admin.