Wait. He rejected Aira, then he accepted the defeat even he don't have Turbo Granny's power anymore. It isn't about rejecting power or something. But rejecting the idea of "i'm useless and cannot do anymore. I'm hindrance!" In Okarun's case, he need something to boost him up. Ah, i know why Ogre's Clube didn't work at its fullest.
Way to go Okarun!!!!