There you go again quoting a two year old thread. Please note that Fairview Park is still open to any and all that want to fly sailplanes and small electrics -- AMA or not.
As to HSS taking over the park? Don't bet on it. This has been tried at least twice before in the last 15 years and each time the city has said; "Nice try. What in the word 'public' don't you understand?" The club does pull a permit for it's major contests as do the cross country runners and a few other community organizations.
As to discourteous flyers and noisy aircraft; use the existing laws. A park ranger has the authority to evict anyone that is endangering the safety of others. Noise ordnances take care of the other.