As pointed out above, one of the very important requirements for this "exploit" to work was left out of the directions:
Glossed over is the fact that if you dont allow bypass of the screen locking, you dont have this problem.
In other words, it REALLY isn't secure to begin with if you allow bypassing screen locking!. That's exactly what this is describing: unlocked, bypassed screens! What do they expect if they TURN OFF SOME OF THE SECURITY????
Default is screen locking on.
This is almost as stupid as complaining that your Jailbroken iPhone is more susceptible to malware and blaming Apple. . .
As I said, it's bogus.