The job of a manager is defined by the title; not only must they have a sense of directing the cause, but he must be able to contend with setbacks, literally "manage to get by". Saturday confirms Mark McGhee is failing in both regards.
A leader must take responsibility when their decisions go awry, and must understand that, regardless of individual performances, it is he who must face the consequences. McGhee's assertion that Hartley's red card and individual contributors were the cause of such a defeat shows terminal lack of leadership. Players are certainly accountable for their performance, but they must answer to their manager. It is he who must be amenable to supporter outrage and who must acknowledge his own culpability in events.
Never in our history have we endured anything like the Celtic farce. One would hope, given McGhee's emotional ties to Pittodrie, he will realise the task in hand is beyond his powers and remove himself from office, but recent statements suggest otherwise. The only way we, as supporters, can move on is if the manager does too.
See the published version of this article plus fans of other SPL clubs' responses to their team's performance at: http://sport.scotsman.com/newsfront.aspx?SectionID=14223, and in the Scotsman newspaper every Wednesday.