I also don't believe that just turning-out a problem horse is the solution to anything. Many horses seem to go wild very quickly - losing respect and any desire to work - making solving the problem sometimes more difficult. That said though, I must stress that I turn-out all my horses, regardless of age or training level, on a regular basis. I also am a strong believer in turning out horses before a long trailer ride and after a show.
Every horse needs to feel the sun and fresh air and get the break that turn-out can bring. I just believe that structuring turn-out around a horse's work schedule, age, issues, etc. can bring many added dividends to you both. See you next week, JD! (Blessed are the brood mares - best wishes to all of you with new foals on the way this Spring!)