Ok. After nearly killing myself with knives, scissors and magnets, I found a far easier, safe way to open a DVD with DVD lock.
The DVD is only locked on one side remember. So simply push down on the side with the magnetic lock against a floor or from the spine side against a floor or table. You with hear the DVD crack open ajar on the top and bottom slightly. I then dug my thumbs in one of the locked corners and forced it open easily. Then do the same to the opposite end. You are then in.
Once open, you can simply force the lock out also by pulling up and out. Very easy and very safe.