Taxation has been mentioned - making jovie land pay tax would mean that they'd simply put yet more pressure on members to cough up more bucks.
A coup has been mentioned - however, some members would go with the current regime and the rest would go with the new. We would simply have two jovie worlds to deal with instead of one.
Paedophilia has been mentioned but it doesn't seem to adversely affect jovie world nor the katlicker church too much.
The only way this evil cult can be killed off as far as I can see is if far more people leave the organisation than joins it. It's that simple. You don't even have to get everyone to leave. Just enough such that the funds coming are insufficient to sustain the organisation. Once that happens, assets have to be liquidated and it's then downhill all the way. Eventually, although the organisation still may have a reasonably substantial membership, it will be untenable as an organisation because of the funding gap between what it needs to survive on a daily basis and the amount coming in. Of course they have assets that they can liquidate in the short term but although they are large, they aren't infinite. Besides, once the top management can't afford their large cars, houses and solid gold watches, they'll desert the sinking ship and the whole lot will quickly implode.
How do you get more people to leave than join?
Bad press. This causes existing members to leave and potential new ones not to join.
Essentially, this is what DoC & Simon were getting at.