I dono, i feel that's just how Vox ARE, and you can't rework that without destroying their entire background. I wouldn't call it "Self-Antagging" as that is such a broad term it can be applied as a cudgel to stop something someone may not like. People should not be punished on server for following their races background and lore, because that lore was written and approved by the server itself.
If a vox raiding party boarded, and followed to inviolate, more or less every vox in some way if asked, would pitch in assistance where they could, an unlocked door here, some medical supplies there, a key "accidentally" dropped, a long boring talk with the HoS by the detective to keep him busy, etc etc.
That's how Vox are, they are VERY agreeable to assisting fellow Vox so long as it's not going to violate their Inviolate and that the vox in question has not either. Doesnt matter what Ark they hail from, what ship, what criminal past as the laws broken, are not THEIR laws.
I got to interact with a small raider group once, and this happened, they weren't hurting people, they followed the inviolate, so what happened? Me, the Medical Vox helped them out, and the security vox? Did the same where he could, and in the end me and the sec vox joined their merry crew and escaped on a "borrowed" Sol trader shuttle that was once filled with xenos.
In the end: Has the raider group seriously harmed/killed any kin or more than a few non-kin? Have they followed the inviolate? If No and Yes, then guarantee vox kin assistance of some kind, some where, If Yes and No, expect SERIOUS Vox kin RESISTANCE in every conceivable way.
You can expect some help if you follow the Inviolate.
You can GUARANTEE mass resistance if you don't.
Such are the vox.