I would keep trying to mist, at least until he is comfortable enough to shower. You might try different temperatures of the water. I have found that my Grey loves it on the warm side - real warm, just south of hot!! Not all birds like the same temperature. It is funny when I start to mist Peanut he HAS to have a drink first. He even likes his drinking water warm! This really surprised me, but at long as the water isn't hot I think it is better to mist with warm water than none at all. My Sun Conure would rather the water be cool, my Tiel doesn't like any but is better with it on the warm side too.
I have never used the Aloe either, but have heard from many that it really helps.