(Mr MC posting)
he is passionate, hotheaded and immature but also has some awareness of that. After dissing thor hushovd for having to make an appeal in order to win a stage, thor rode off on his own and proved he is a better all-round rider than Cav. Cav then approached him in parc ferme, apologised and said as much.
If he was 100% c*ck he wouldnt have thought it necessary or appropriate to do that.
I would also ask the cynical question that was he punished by being withdrawn from stages he would not have competed in? He's also generating wider press interest in the sport, and anything that isnt a drugs expose is good publicity.