Bwoink observers that were pooled for posibrains to allow them to retract

Created by: dylanstrategie

One in many, other roles pick ghosts directly without a chance to retract (notably wizard apprentices and dionae) but this should help a little bit. Idling as an observer while tabbed out is a mine field unless you retracted most of your preferences

This should lower the amount of admins and round observers who end up clogging posibrains significantly