Managers make a team, let's not reduce their importance.
Porto should never have won the Champions League, nor should Inter Milan, yet Mourinho somehow dragged them to it. Greece should never have won the Euros, nor Denmark, yet having managers who got so much more out of their team that they should have, enabled them to do so.
People sticking with Strachan out of fear of getting no one else just sound like beat up wives who are scared to leave their husbands. We might get Bobby Williamson and he ends up being brilliant, who the hell knows.
Strachan failed, accept it, he isn't some great white hope, he isn't the saviour. Levein, Burley, Calderwood and every other person including me, Jackie Bird and Danny Alexander would have achieved 4th place in this group.