I ended up using a credits frame I added to the end of the animation the other day -- that has the advantage of not hinting at any of the specific content.
It was basically a courtesy comment. I've worked up a 150x400 version by clonebrushing a clean section of background and re-adding the text (which produced a sharper end result that retweaking and reducing an existing bitmap image of text).You'd have my permission to modify the credit banner except that you don't need it. It's a remix itself (of the first page) so it falls under their CCL too. I couldn't resist the recursiveness.
The tricky part was balancing the icons and the Creative Commons license URL. Breaking it into two lines, indented, seems to work fairly well -- I think it's obvious to anybody who knows how to use the Net that you type it in as one line.
I'll probably do a few more tweaks to letter spacing and composition (I have the text saved as a separate layer to facilitate that) before finalizing it.
Edit: The new round of blowups includes the opening frame of the Titans creating Erfworld, which is helpful.