Can't unpublish an instructable

I haven't been able to unpublish an instructable I made a while ago. I entered it in a contest forever ago but recently wanted to delete it.
here's a link to it:

mikeasaurus11 months ago
I can unpublish it for you. Can you tell me which contest it was entered in?
bioboy725 (author)  mikeasaurus11 months ago
Thanks for the quick reply, but , after thinking about it, I've decided not to unpublish.
I'm glad you decided to keep it up. That project is awesome.
Kiteman12 months ago
If you drop an email to, they can sort it for you, but, why unpublish? The project's fine, almost 10,000 people have read it. Why get rid of it?