Presumably businesses located on the airfield hold leases on their hangars etc. Until these run out, Council may find it difficult to force any cessation of activity.
If Council own the land they could carve up the runway meantime to stop flying, but that could be challenged as vandalism, limitation of trade or simply vexatious - a good lawyer would find something, surely.
As for arrogant behaviour by some club members, probably.
The threat put forward by someone in the club newsletter to commence flying early on Sundays as a counter to the mid morning Church Hour curfew being a prime example.