I think that the Bassa constitution as you portray it is excellent, I repeat excellent.
Every union branch should be lay member driven and lead. Its the alleged money side that potentially lets it down. The only incentive should be to act for the benefit of the membership.
How can it be excellent when the (only?) let down is the money side. The current leaders have a distinct financial advantage in keeping the members in a dispute which to all reasonable people, should not have started in the first place?
To add that the accounts appear to remain "unavailable" in contravention of the regulations, seem also to tarnish the "excellence" a little.