The easy answer is that people could lay off on gangbanging Gallic players for once and consider taking a pop at each other every once in a while. I'm well aware that in the specific incident that spawned this thread GRN| was in the middle of attacking a base, so you could argue that in this one case an exception could be thrown out there, but it's not like this is an isolated sort of incident.
This sort of banding together has been going on for years now, with Tau-23 and Leeds being the worst offenders (LN, LSF, BAF, BPA, KE, CR, OC, Mollys, Council, and an ID-violating Blood Dragon is the record from some time in 2014, as I recall), but while the GRN playerbase has declined the incessant hunger of every "good guy" player on the server to kick them in the balls hasn't diminished one tiny bit.
Nomads/Wild have had the same problem for the longest time as well, but it's mitigated by the massive amount of interfactional warfare that generally goes on in the Omicrons anyway - Order and Core are about as likely to go on with the gay "we must ally to defend humanity!!" schtick as they are to turn around and tear chunks out of each other. In Bretonia, this doesn't happen for RP reasons, and it never used to happen in the Taus because we were active enough back then to justify it. There hasn't been a proper Tau-23 fight in years, though, so at least that side of things is a relative non-issue now.