It is difficult to say. In the photographs, it is not possible to see the texture of the bark or the way the roots have been tied down. They look nice and green and there are a lot of them, so that is good. I would imagine that if they are firmly secured, new root growth will begin attaching to the mount, provided it is a suitable surface.
---------- Post added at 09:09 PM ---------- Previous post was at 09:07 PM ----------
Here is a more recent picture of that Phal by the way...with two spikes!