The posted articles had several links, and I read a half dozen articles discussing Trestman and his coaching. Virtually every article, from his days in Chicago, Miami, Minnesota, Oakland, North Carolina State and the CFL said the same thing about Trestman - he was a brilliant mind, a real "Xs and Os" offensive mind, but he seriously struggled relating to players as people, as individuals. For example, the Bears' players were all excited when he was initially hired for their O coordinator, but... later, his players didn't mourn his departure. Flacco IS a mature QB, only needing offensive direction, so perhaps it will work out - only time will tell.