IG Report On USS Memphis Cheating Scandal

To the surprise of no one, the Navy IG found that the cheating scandal on USS Memphis (SSN 691) was not evidence of a Force-wide issue. Excerpt:
U.S. Navy investigators have dismissed allegations that pervasive cheating tainted training exams administered to enlisted sailors and officers in the submarine force, according to documents obtained Thursday by The Associated Press. The inspector general for the Atlantic submarine force opened an investigation following a complaint that originated in Groton, Conn., the home port of an attack submarine that was hit by a cheating scandal in 2010. In a letter sent to U.S. Fleet Forces Command in December, the commander for the Atlantic submarine force said the claims were unsubstantiated. It said previous episodes mentioned in the complaint were investigated and dealt with individually.
Is anyone surprised that the Navy didn't find evidence of pervasive cheating on the boats?