AOL head of media David Eun has announced he will leave the company once its acquisition of The Huffington Post is complete and Arianna Huffington takes over his responsibilities.

Eun’s the guy who made this silly, lighthearted video about how great AOL’s doing just a few months back.

Eun was reportedly offered a job in AOL’s video unit, but he declined. From his e-mail to staff:

With the historic acquisition of The Huffington Post, my role and responsibilities as president, Aol Media are changing. Tim and I have discussed at length how I might continue within the new organizational structure, but ultimately, there isn’t a role that matches what I am seeking to do.