Nonviolent Strategy Tools, George Lakey & Training for Change http://www.trainingforchange.org/tools/Strategy (other good group tools and activities there as well)
"Grassroots and NonProfit Leadership: A Guide for Organizations in Changing Times" by Berit Lakey, Janice Robinson, George Lakey, Rod Napier is an excellent book applicable to radio stations, typical problems, and many solutions.
Gene Sharp describes the theory and framework for nonviolent struggle in many of his works, and it is some of the most thorough work I've seen for assessing and re-assessing situations, intelligently targeting strategies and tactics, and of course suggesting 198 possible tactics. "From Dictatorship to Democracy" (Sharp is usually writing about country-level struggles) is on line at
http://www.engaged-zen.org/PDFarchive/From_Dictatorship_to_Democracy.pdf
What makes authoritarians and their followers tick, and what shifts that? Bob Altemeyer's book "The Authoritarians", available both on line and on paper: http://home.cc.umanitoba.ca/~altemey/
It's hard to recommend a specific George Lakoff reference (framing and how to shift it).
Some conservatives are ideologues and you're not going to sway
them. But most conservatives are nice people. What you want to do is activate their nurturing model, engage their empathy. Ask them who they care about, what they care about, and why. Find out where their empathy lies. Connect with the part of them that shares your values, and get that to spread to other issues. http://berkeley.edu/news/media/releases/2004/08/25_lakoff.shtml1
The most recent Alternative Radio featuring Lakoff is good too."Come Hell or High Water: A Handbook on Collective Process Gone Awry" from AK Press. Although this book is about fully-participatory democracy in groups, many of the lessons and things to watch out for apply more
generally.A TON of bite-size information and theory about conflicts of various kinds, large and small: http://beyondintractability.org/
Many of the dynamics surrounding whistleblowers also happen around grassroots radio disputes. Brian Martin is one author in the area and his books can often be downloaded: http://www.uow.edu.au/~bmartin/pubs/supp.html#books
The "Suppression of Dissent" web site is even more applicable: http://www.bmartin.cc/dissent/ particularly Suppression of dissent: what it is and what to do about itConflict Mediation involves a neutral third party helping people in conflict create a mutually-acceptable outcome. Lawyers and judges who practice mediation may not be your best bet. Many locales and regions have mediation groups, resources, and sometimes centers. Stay away from the ones mediating lawsuits unless that's what you need. http://iadrglobal.org/
is one of many mediation organizations.