Wait, I'm confused- if it's delisted, what does borrowing an account accomplish? If the proper account owner deactivates your console from his account, then the game wouldn't run becuase you wouldn't be authorized to run it. If you've bought it before, you should still be able to re-download it without help.
Methinks it's time to grab a parrot & run up the skull & bones, if you catch my drift.
I think that there's no problem with "deactivation" on PS3, it doesn't work like it does on PS4.
I'm still using "Wolfenstein 3D" installed from the account of another person who helped me with this.
EDIT: I've been trying right now and "Wolfensfein 3D" doesn't let me use it anymore, so you are right.
Then I would need the person to let me keep my console activated until I could finish the game.