You shouldn't have deleted his build regardless and should've just told him to build a better shop, if it was really that bad the map is large enough so that people can pass by without knowing it was even there.
Read the whole post. Ark states he isn't there when it's deleted. Gunner probably deleted it to bring the brickcount down. Gunner is a great host and a great person. He's one of the few people in this thread who's actually played the game. I am an admin at his server, and we've been friends for years, he doesn't do something like this without reason. Ark, Gunner's RPs differ greatly from Aeschylus' servers, you can't just plop an ugly shop down right next to someone else's without expecting it to be deleted. He has the loving right to feel 'salty', he hosts a server with ~13 people populating it on a normal day, the stress of managing a server with that many on it can get to him. He has to make sure nobody's abusing wrenches, create a storyline for the roleplay, manage his admins, keep them in check, keep the server running, respond to questions in OOC, and roleplay to boot. What probably happened was he removed it, you came back to find it removed, whined about it in OOC, then got banned.