Ok. I know most of the advice would be to junk this NOID phal. But I am sentimental. This has been a strong ever bloomer. Got careless when I started building the collection and it got crown rot. Removed sprayed fungus etc but the plant is weak. But can u see it still insists on blooming? It as two spikes, one w a leaf on it and I recently cut that down to the leaf. The other spike still has blooms and I am waiting to trim it down. It had the crown rot attack like at least three Months ago and is still alive. I have held back on anything aggressive except to spray fungicide and very mild growing fertiliser. Any advise anyone? Needs expert help now.
Assuming the roots are good, you might have a chance but its going to be a while before it recovers, if at all. If it were mine, and I have inherited a few like this, I would cut the spikes. You must divert the plants energy into making a basal keiki. Keep it a warm, dim the light a bit and just keep supporting it.
You have a flower stem with a leaf on it? That leaf is probably a keiki. A better photo (close up) of the stem and leaf should help confirm if it is a keiki.
I agree to cut any flower spikes that are just trying to produce more flowers. But, if you have not already cut the stem that has the leaf (assuming its a keiki), leave it on the plant until it has a few roots. Then, cut it loose, pot it up on its own. You can then try to see if your crown rotted plant produces a basal keiki as well.