Well it definitely wasn't my friend, because it destroyed his house too. But thanks for clearing it up. I'm not really too bothered about getting raided now that I know it wasn't you. Thanks for the response guys.

As you can see, there aren't that many animals. my entity count was around 50, but I guess if you came to make a point you might have killed some. I have no dates, I wasn't the one that found it first, Hooshmax was, and he showed me pictures maybe 3-5 days or so ago maybe. I'm not mad at the fact I got raided, I'm just upset that it was potentially an admin who had my coordinates from coming to us to tell us something before. Also iClutchHD, I know hoosh told you when I made this post, I just thought I should post on the forums so it might be dealt with more seriously. Sorry if I wasn't supposed to do that.
Here's some screenshots with the sign.
http://imgur.com/a/EPsyQ

This admin had come to me and hooshmax's base to kill entities. We were unaware of the entity rule, so he had every right to TP to us and kill our animals. We have kept the entity's down. We both do our best to follow the rules and just play the game. This we maybe a month or month and a half ago. Recently, however, he returned and griefed our base. We both know very well that grieving and raiding is stated in the rules, but we both think that an admin who has come to our base before should not be able to grief us. If they can simply go to players, write down some coordinates, and return in a month to raid and destroy, what's the point? No distance from spawn will keep you safe from someone who can TP to players with or without permission. I understand that I have no obligation to play on this server, but with all the instances of people being kicked for chat violations and such (which I personally think is great) I'd certainly hope something this unfair will get dealt with.