I think they plan to cut down the tower and saw it into joists basically. The tower wall should be thick enough to allow for that.
You will loose some material ofcourse but most of it should be possible to use in construction.
Probably doesn't matter all that much, especially for interior material that wasn't exposed to the elements. Worst case you're probably talking strength on th order of chip board which is still useful.
I would still assume it could be sawed up and turned into building material, highly unlikely anything but the outside has any appreciable deterioration
