Problem adding a Creative Commons license codeblock to a pbwiki page

I'm trying to insert the full license HTML of my preferred Creative Commons License. If I put the html into a page, it shows up appropriately in the preview, but not when I actually save the page.

The actual content I'm trying to insert is a link containing an image, followed by some spans of text that contain links. If I view source on the saved page, I find a paragraph with an empty link (pointing to the correct place, but without the contained image), followed by the exact same link containing only a br tag. The second one is the *really* strange one, because that particular links only occurs once, at the beginning of the license wrapping the image, and a br tag *never* appears within a link.

I'm assuming that the html is being automatically cleaned by something, in the process stripping out all of the content of the license. Is there any way around this?

For an exact reproduction of the content I'm trying to add, head over to this link:
http://tinyurl.com/6284sk