I strongly disagree. Pain management is a very complicated aspect of good medicine and the DEA has been obstructive for a long time. Perhaps this doctor should have lost his license to practice. But he should never have been tried in court. The state medical boards deal with cases like this all of the time. It is cases like these that provide cover for many lazy physicians to not control pain very well for their patients.
Several years ago, California passed a requirement for medical license renewal that 12 hours of pain management CMEs be earned by Jan 2007. (It is kind of a joke, but the intent is clear.) Radiologists and pathologists, because they lacked this responsibility in their practice, were exempted.