Are you an owner? if so then you need to get another owner to kick you.
EDIT: If you are not, just simply click resign.
I'm not sure if this bug has already been addressed but Plutonium has been behaving rather oddly when placed in a closed container and not under the influence of gravity(ie gravity is off). The plutonium seems to just disappear gradually however the particle counter does not change at all. It also seems to be able to diffuse through solid particles including diamond.
EDIT: Upon closer investigation I discovered that the bug also affects other powders and liquids, gasses however are not affected too much
EDIT 2: It appears that the particles are not being deleted nor are they turning invisible, the reality is that the particles simply move around and become stacked on top of each other. This can, in theory, lead to the creation of BHOL as multiple particles are being compressed.
Layering has been around for quite a long time but it usually required you to use the console to stack particles on top of each other. The stacking of non energy particles has been regarded as a bug anayway and it definately should not have been caused by a lack of gravity. Furthermore this has to be a bug since it can destroy Diamond with ease