Depends on what the legal coop paperwork says about eviction and corresponding state law.
It depends on whether its a ‘house rule’ or a by-law.
While the Board of Directors can change the house rules, typically a change to the bylaws, which are usually incorporated into the proprietary lease, would require a 2/3 vote of the outstanding shares. It’s all under New York State corporate law.
In these big-money cases, everyone will lawyer up, and the litigation will go on for years.