I see a guy that stun mobs while chaneling, runing with a box after him. I don't know any bots that are able to see a mob chaneling spel, and react.
Just looking at the way he stuns you can se there are no patern in it,like a boot program whill do it, sometimes he stuns first mob sometimes is 1 hit and after stuns sometimes 3/4 hits till mob start casting something and he use it to intrerupt.
So if you hate him so much you need something better than this to ban him.
Edit: and at min 20:18 you can se how he kill mob forget to pick up and stun next mob that apeard and start casting and after pick up,this is not smth a boot program can do.