It depends on the type of organization and the whys of it all.
In cults the leader can really do whatever they want.
In sects they can mostly do whatever they want within reasonable limits.
In a faction there are NPC bosses who may counteract choices.
In general the question is going to turn on if this is sensible leader behaviour and pro-rp, or is it internet-person controlling type behaviour. So is it like someone is leaking intel, working against the group and never helping, pretty easy justification, are they a helpful person who just also does stuff against the group or you don’t like, not very justifiable.