LOL I am sitting here just laughing reading your post because Stedman does the exact same thing. I mean TO A
T! 
He'll also roll around and flip himself over a million times on the floor and rub the side of his body up against the bottom of the couch - he just goes completely CRAZY after his bath. lol. My husband always says, "Uh oh babe....he is spazzing out again!"
LOL.
Tatum gets so crazy after her bath too - but really she just gets crazy in a sense that she wants to play with Stedman, attack him and so forth, lol.
There is no doubt about it - after bath time, I have two CRAZY Yorkies running around this house