From what I've read, I think he was trying to capture their live vibe, but didn't quite get there and the results were more like a demo.
Some of the tracks got released, Jeane, for instance, which is one of my favourite Smiths songs ever, which is why I'm interested in listening to the whole session.
Have you got the vinyl Chris? I think there's a CD too? I've not got Tidal, and the price of the Complete vinyl boxset is beyond what I can justify for a few non album tracks