Common sense - or what passes as common sense - seems to have broken out on The 5th Floor. Our Eyes tell us that Chief Schultz has sent the Reserve-Gate "investigation" back to IA for investigation.
Seems that the finding that no one involved at anytime did anything wrong just didn't look so good when a few moments on Google would reveal any number of violations that make exonerating Young, Hudson, and Smith next to impossible to believe.
Originally, the plan was to slide Hudson and Smith back into SID quietly and under the cover of the transition. Of course once their plan was revealed, they couldn't very well go through with it - particularly based on what can only be considered questionable findings.
This is just one more indication that The 5th Floor is incapable of policing itself. The Chief and his DCs work first to hide problems rather than fixing them. Of course the cover-up needs to be hidden too. Before long you spend all of your time hiding screw-ups, petty corruption, and even criminal behavior all because politics has become the number one priority of your police force.