So, first question, how were the contents secured but not examined ...yet they were leaked.
Should the notebook be inadmissible since it was sent to his Dr?
I think the answer is yes.
“In September 2004, Dr. Fenton received an admonition from Colorado’s board of medical examiners for prescribing medications — including the allergy medication Claritin, the sleeping pill Ambien, two tranquilizers and the narcotic painkiller Vicodin — for a few colleagues and her husband on several occasions, and failing to keep proper documentation of the prescriptions. The board noted in its admonition letter that Dr. Fenton was no longer writing prescriptions for people who were not her patients. “
http://www.nytimes.com/2012/07/28/us/colorado-suspect-was-getting-psychiatric-care.html
As Zer0 has said (in the past with his Choom Gang) “Interception!”.