It's not a firing situation, but Bill Walton will not be returning to ESPN to cover the NBA. Walton has been dealing with back issues for years now (the reason for his original departure from ESPN), and has subsequently made the personal decision to retire from broadcast entirely. Via Sports Business Daily....Citing persistent back problems, Bill Walton has decided not to appear on ESPN’s NBA telecasts this year, ending a relationship that started in '02. The Basketball HOFer missed m...