Fulmer certainly has grounds for a suit against not only Gallion, but Finebaum as well. In fact, Gallion had Finebaum attached to a multi-million $ lawsuit for slander (Finebaums on-air comments regarding Cottrell and Williams) 2 years ago. When Gallion dropped the suit, Finebaum became his PR guy. I guess that makes Finebaum Gallion's ho.
Fulmer on the other hand doesn't have the time to waste with this hack. The only thing Gallion wants to get out of any of his actions is to humiliate Fulmer and UT. It's a hate thing. So, Fulmer continues to piss off Gallion by staying under the radar.