Good question, I would like to know this too.
I wonder if you could load an OWS skin object into the head using fortyfingers. They updated it so you can put whatever you want in it..
As I got some requests to allow adding all kind of content to the head of the page, I decided to create an attribute to allow adding anything to the head of your DotNetNuke page.
You can pass multiple strings, but to make sure not conflicts arise, you have to use 2 pipe characters ("||") to seperate them.
Example: AddToHead='<script types="text/javacript">alert("Inject to Head Example")</script>||<meta property="og:title" content="my title" />'
You can use also use the tokens that are listed under AddBodyClass in the AddToHead attribute.