It sounds to me like every single bit of this stems from years-long buildup of hatred between one another. It's honestly really sad. I wish I could get along with everyone equally. I remember when Ridaku and I were pretty decent friends years ago around 2013-2015, and nothing was an issue between us. I also remember a lot of times in the past years Pyro and I getting along.
We also bickered, but I don't ever remember anything being too startling. For Void, I honestly don't recall who they are due to name changes throughout the years, but given I don't really seem to know them I figure we've never hated eachother. I would hope we've gotten along.
With all this in mind, I doubt the counter-solution to the one already mentioned would work: Voiding the split canon Kandarin and asking Void to hand back the controls. Regardless, it is what caused this problem to begin with, and reverting to how things were two weeks ago would be the best options for everyone involved.
I'd like to go a step further even though I don't really know how well it'd work in the community here and ask that everyone forgive the opposing party for issues in the past. We're all, I suspect, adults now; we've all (just about) been in this community since W42 existed as W31, way back in the day. We were little kids back then, immature and highly toxic when we opposed one another. Every single one of us has grown from then.
So has our problems with one another, and so has our knowledge of one another expanded. Everyone knows eachother pretty well, some of us having even met IRL over the years, something we never really expected to happen when we first went in character on W42. Hell, some people even met and have gotten married or had kids from meeting in this community.
That's pretty awesome to think about, with Quick Chat "This is not a dating site." echoing in the background.