I've seen people abuse this power. When you rejoin the server resets the weight. Its harder to solve this because the server only detects the players when they are on the server.
Not sure if this is a bug or just an unfortunate path towards abuse. I assume if a player is abusing the system, you can admin it with W/K/B under server disruption, however Custom Stats
and @Larry_Da_Lobster will be able to shed more light on the problem.
As there usually is a lack of people taking warden to begin with, we do not see this really as a big issue, and will not be further pursuing it. Thanks for bringing this to us~