The six wins JFC started, were won despite him.
The four wins he didn't play in, were won because he wasn't playing.
Is simples.
'Explanations exist; they have existed for all time; there is always a well-known solution to every human problem — neat, plausible, and wrong.' H.L. Mencken.
Hyypia's and Burkes' departures really leave few alternatives, don't they?
One does what one can do with the scapegoats available...
"Watson, how often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?"
Everything in football is overdetermined.
There are way too many causes, and only three outcomes -- win, lose, draw.
You can attribute anything to anything, and have a leg -- or no leg -- to stand on.
But people have a natural drive to seek explanations.