If anyone was expecting some public statement from him, that's not his style. No AD for the most part works that way, threatening a coach publicly or throwing them under the bus in an interview with the press.
Dr. Maggard will do his job I have no doubt. While he didn't say anything publicly concerning Marlin, he did say in a meeting with supporters including myself that losing to teams in your own conference by 25 points was concerning and unacceptable. To me that as close as you are going to get from an AD in suggesting conversations have taken place concerning job performance.