Noone knows yet how the recovery mode is implemented in Crediar's hack, how can you "think" it has a full brick recovery? No proof, just guesswork and hopefulness. I do hope however, that it can repair full bricks, especially since bushing and co. previously announced that they are working on the aforementioned full brick recovery menu.
Yes, its unlikely with Crediar's hacks, but noone apart from them has the knowledge and expertise to say its impossible, and so far they haven't.