You lost me a little bit, because the main issue is way over verbal, i wish i had an option to blist his AGA/AJA spell.

No, the problem is way over that, and there nothing i can do about it, only GM at this point can help the situation, and what is my option if nothing is done... If i can't cleave because that guy decided is right to do so, what prevent me to act the same and prevent everyone from cleaving, and what prevent all these to prevent all other by frustration as well. Anyway there is no need for me to explain the hurt that can cause to the game since everyone can picture easy the problem.

There just no good reason for GM to let this happen, no one win out of this. Of course the reason i do my FC is irrelevant, i could do this for Ki or for fun, as you said that change nothing to the issue itself.