[eluser]talldarkmystere[/eluser]
So long as this does not effect regular source viewing, or page generation in the browser, I'd say just chalk it up as an oddity in the DOM inspector. In other words, nothing to worry about.
I found it odd that it appeared to include the contents of the css file as well as placing it in the 'wrong' place - I have a feeling that it's showing you the source that's been interpreted by the browser in some funny way.
