This is a year after his fight against Akainu.
Now, I think he definitely got some of his will back as we saw with smoker and Garp, but I don't think it's as it was before, he literally lost the fight, lost a leg and had to give the FA position to someone he doesn't like.
Garp also seem to state Kuzan lost his way.
Regarding the Ice Leg, it needs to being used with Haki all the time so it doesn't break, and if he fought Akainu again for example, do you realize how much it would hinder him in a fight?