Was Deep Six banned from BattleBots?

I'm curious, could you tell me if Deep Six was indeed banned from the BattleBots competition? I've heard rumors that it was due to its aggressive and destructive nature, but I'm not sure if that's the whole story. Did the organizers cite any specific reasons for the ban, and if so, what were they? I'm quite intrigued by this situation and would appreciate a clear and concise answer.