As you have found---the header that is encrypted really does do alot of protection, it diables printing, disables storing the page in cache, kills the CNTRL+C, CNTRL+P, disables Adobe Acrobat Image to text capture, disables the ability to select text with the mouse, disables the clipboard, and disables right click. The problem with implementing the protection in the header.html, is the protection is site-wide. Therefore, if we want to offer a printable worksheet or handout, we have to create it in Adobe Acrobat, and offer it to students as a "resource-uploaded file".
It has been spoken of many times in this and other forums that looking to "secure" the quiz module is a flawed philosophy. The problem is, not all teachers are Social Contructivists, as much as I would like them to be. And the School has instituted a school-wide adoption of MOODLE as the elearning platform. This brings teachers to MOODLE, but still wanting to utilize their traditional pedagogies. We have found that the less you push on a teacher, the more willing the are to "explore" and "experiment" after they have basically replicated their in-classroom course to the WEB with MOODLE.
I know that the majority of institutions are not necessarily happy with WEBCT/Blackboard/e-College, but for them to choose MOODLE as a replacement (which I believe it kicks the other around) then small changes like the QUIZZES offered one question at a time MUST be implemented. It's what they're asking for---let's give it to them---
Take Care Timothy--Rob