You need like 3-4 tanks with the solo job of controlling the kamael agroing him on melee range so that he cant even use the fking rush impact.
Hhmm, seems like You don't have a clue how scripts actually work, but it's fine, I won't laugh at You like You did. I'll teach You something, just please, do me a big favour and try to start thinking as You are in 2018, not 2008 fighting against some brazilian subcluss acumulativas multiskills l2utenus core players who actually can't even right click properly playing interlude.
Ok, so what I wish You to understand is... You can even make a whole clan of tanks to agro these zerks, and it will never work cuz agression won't work (antiagro scripts) + it's picking random target's in radius You provide, with actual skill order working range. Oh, and don't forget about auto targeting people who actually stand after ress and are without noblesse.
But yea, You can always root them as You said. XD Especially when bp cleanse has around 3-4 secs of delay, and You got one on Your own as zerk.