Phalaenopsis no ID crown rot with possible new basal growth - will it survive?

[LiveLaughGrowOrchids]

Hello all, I got a new Phal from a medical practice that probably buys new ones from the shops every month and throw the old ones out. Growing conditions probably weren't the best. So I removed the ornamental moss and took it out of its pot. It still had 3 leaves, and quite a lot of healthy looking roots and a dead flower spike. So then I notices there was a shriveled black thing at the crown and the bottom leaf although healthy looking was half off. I've removed all the old sphagnum moss, cut away dead roots and repotted in quite a coarse bark/charcoal mix which I only had time to soak for about 15 mins - usually I do overnight at least but I was really worried about this little guy so didn't want to wait. So it also has what almost looks like. Flower spike growing out the side and on the opposite side a new root tip. This is below the two remaining leaves. I removed the loose lower leaf. I've dusted it with cinnamon and put cinnamon in the crown. I gave it a good watering, and plan to just leave it alone for 2 weeks before I give it anything else. I'll post some pictures. Two questions from more experienced growers 1- will it survive? 2- should I fertilize? Foliar feed since even though the roots are still plump and green when wet I didn't see any actively growing root tips and I know they only absorb nutrients via the root tips. I also don't want to stress the plant by giving too much fertilizer if that will impede recovery - although it made its own basal growth before I even got it so it was probably doing ok where it was - don't think anyone was watering it which probably also helped it.