I think he is just frustrated how it's turned out, how he can make this great server and such, while Stefan is concentrating on iclassic for profits. While I agree he seems to feel like he owns and made it all, and hates to see the potential wasted and Stefan abandoning it.

He is a bit bitter and upset, but with what he has to deal with its easy to understand why he is fed up. Because he can't stand Stefan, his work is ignored, and he cant get the server where he wants without Stefan, and he is too afraid about what Stefan will do with his and others work...

It's quiet sad really, image how much better graal iclassic would be with him as head of quests and storyline.