(fee dispute between attorneys; farm owners originally hired law firm to represent them in action against Tennessee Valley Authority for coal ash spill; owners fired attorney after communication issues and being pulled into class action suit for which they did not want to participate; second attorney effectuated settlement with TVA, which included sale of owners farm; second attorney paid 25% of settlement, which was $900,000; first attorney awarded quantum meruit for work done prior to being fired for cause by owners; judgment against second attorney rather than owners; on appeal, court upheld trial court finding that attorney fired for cause and quantum meruit calculation of benefit conferred).