Scourge Haunt invasion

Lately more and more : Scourge Haunt : have been showing up on Ragnaros it started whit 5-6 at a time not a big deal but now we found around 656 spawned next to King Varian Wrynn in Stormwind its impossible to que for arenas in that zone whit the grate amount of 2-3 FPS and a Burning GPU if this thing continues my GPU will burn out along whit my living room.These objects are Type 3 (NPCs) they can be easily removed from the database.Here are some screen shots and a dump off all the Guid and X Y Z of all the mobs (some stormwind guards might be in there too soz).
I like to be informed when stuff like this happens not just being told in a ticket that i have to be patient and wait for a fix while i cook my eggs on my GPU.

And here are some questions for the staff.

Why are these mobs here in the first place?
Why arent they removed yet?
Whose fault is this ?
What are they used for ?it looks like some developer is experimenting whit some thing from the screen shots you can see that they are spawned in perfect lines they clearly cant be spawned by a player.

http://imgur.com/vGacr9W
http://imgur.com/fnVjnMP
http://imgur.com/JwUWEII
http://imgur.com/dnyDtDH
http://pastebin.com/raw/xzzKbu3u
http://www.wowhead.com/npc=29238/sco...nt#screenshots

I'm surprised you haven't just googled "Scourge Haunt" to answer all of those questions, it's the first result.
But grats on using botting software for something else. And seriously if anyone is having lag issues from these then they should probably find a new zone to afk in or invest more in a computer than they did in a free game.