hmm.. I'm not sure what the issue with the control panel is but I used to have a user that would spam constantly, having pages of posts all her own as she would talk to herself, in every topic, in every forum. She was ruining it for the rest as she would take all topics off topic with stream-of-conscious type banter. She had mental issues (seriously) so I couldn't ban her. I did get it mostly stopped by editing the code with a mod Graeme and LK mostly wrote. She couldn't respond to any topic if she was the past poster in that topic - helped tremendously as she could focus a lot better if others had brought the topic back on course.
I think we called the mod "Anti-Gizmo", you can find it here:
https://www.ubbdev.com/forums/ubbthreads.php/ubb/showflat/Number/203379