Sorry bud. When you join public servers your builds become public. Be upset with badspot for allowing such ability.
Btw, it is all for the donations. If it wasn't for donations I wouldn't have a reason to code additions the way I do. The server is pretty much a game in itself. If you begin patronizing what my friends and I have built you become a threat to our production. Therefor, those who cause such drama are removed from playing the game. Please do not post in dramas unless you are okay with being IP Banned.