I am going to hazard a guess that this release was meant to rattle MR & they will be inviting him to another official interview soon regarding any discrepancies related to any inconsistencies found in the MB interview and/or DP.
i agree with you because they seem to go out of their way to address many of the potential scenarios other than MR's involvement. they address point by point the postal worker, the rental guy, who actually made the report, and a rebuttal of the ER,CR,MH scenario MR brought up on Dr. Phil. JMO.