Asked ICC tech services if I could download the pdf to my ipad and unlock it and they said:
"The files do not work on an iPad because they are secured documents and
the built-in reader for the PDF does not work correctly. We apologize
for this inconvenience. It will work on a regular PC Laptop or Mac
Laptop as long as you have Adobe Reader. We are working on files and
software that will work on an iPad currently and don't know how long it
will be before this happens."
So much for being on the bleeding edge of technology.