How to beat a multiboxer(s)

Step 1: Gurath Weapon
Step 2: proc tentacles
profit
??

http://i.imgur.com/48hBIbm.jpg

http://i.imgur.com/ZwaGxv4.jpg

Yea proof, please nerf this annoying Gurath bug

http://i.imgur.com/WFHMvNA.jpg

From some reason, seeings these screenshots pleases me.

http://i0.kym-cdn.com/entries/icons/...77/so_good.png