Well, you asked about how to unhook it from the windshield, I assumed (incorrectly) you had already done the other stuff. I believe there is a more detailed instruction in the -10 TM but here are the cliffnotes. Undo rope or supercord from the back. Undo twistlocks and slide over the studs. Slide top up and off the channels behind the door glass then fold top over hood and slide off to one side or the other.
Also, consider looking at a few of the threads at the bottom of this page.