Okay. In trying to clean up site validation errors, I stumbled onto the answer to my own question. The culprit is the "tab order = 0" found in the Spry's code. Removing that gained not only validation of the page, but removed the unwanted selection indicator from around the accordion.
Thats called a focus border or outline its there for accessibility. This way users who navigate through keyboard know on your site where they are. Removing this border will make your less accessible