It makes me so happy to read of the bond you have with Aggie. I can so relate. I'm betting Aggie won't want anymore baths for awhile after that one!
I'm glad you didn't have to shave him down. He's probably glad, too!
I'd be interested in knowing if he reacts differently toward thunderstorms from now on than the way you described he acted previously, especially having been out in that.
Take care of yourselves.