The problem of course could also be lost in translation. When Cocu says "attitude", maybe he means mindset or similar.
Cocu's English is much better than my Dutch but he does occasionally say words that kind of fit his sentiment but does not actually mean what he is trying to allude to.
He may well have meant that Bogle's attitude wasn't great, however Cocu might have been trying to say his head wasn't quite in the right place.
We have all been there, full of the right attitude but your concentration can be elsewhere for what ever reason.
By the way it is nothing to do with a new hairstyle. You only lose strength and skill by having your hair cut not styled. 😃