2005 Ford Focus, CD stuck in in-dash changer?

My 6 CD changer is full; on the 5th disc, the display is stuck on "reading disc." Eject won't work, load won't work, it won't change to a different CD, nothing works, it just continues to display "reading disc."

I can't find any kind of small hold to reset it; is there anything else I can do save taking it in to the dealer, or pulling the whole unit out?

Thanks!