For those readers who may think we live in a land where all must be ideal, and everything regulated, might I remind you that if a person has his own server, that person can hack, cheat, bot, abuse, revert and do whatever the hell he wants to. If people decide he is a jerk and don't want to play there, that is their choice. If it is that op/owner's personal joy to be king of a crappy server where only people who are desperate enough for a place to play remain, while any sane player leaves within seconds and never returns, such is that person's choice.
The answer always remains the same. It's a free game. Play on places with good admins and fair players, or learn to enjoy being abused. A small "family" of servers could be created with a very limited, inefficient, best-application-of-a-worst-case-scenario Web of Trust arrangement, but the opportunities for spoofing and exploiting such a system by persons so inclined are endlessly entertaining.
Tremulous. Get your own server. And STFU.