When you joined the site, you had to agree to the terms and conditions which state that the site is free to use, but not to leave.
During the sign up process you have granted this site and anything to do with this site a licence to use any image of yours that you upload to this site.
In order to terminate this licence you must purchase the $50 account removal as agreed to when joining the site.
If you want more then one exposure removed, you might want to consider upgrading your account. This will give you the ability to remove as many as you make.
Accepted payment methods are:
Transferwise.com (This is the easiest and preferred method)
Contact masterashton admin on this site to arrange payment.
If someone posted your pictures without your permission, and you want them removed click here