I wouldnt be surprised if Kamemor decided to leave the Pact at some point
Quite likely, the Romulan Star Empire has significant econimic ties with the other Pact members. In a timeline where the Borg didn't invade the Federation in 2381, the Pact didn't exist but its members were trade partners. There influence was sufficient to talk the Gorn Hegemony out of going to war with the Klingon Empire. (Star Trek Online: The Needs of the Many
Leaving the Pact might be akin to leaving the EU - a risky business. Keep in mind there's even a common TP currency.
the Romulan Star Empire would secede from the Pact, it could prompt the Gorn Hegemony to do so likewise, given there growing friendship with the Federation and the alienation by the Breen Confederacy.