Quite a few people have been talking about this and no one has a clue, these are all people who work in the industry by the way. Several people thought the delay ie why they stopped working for a while, might have been down to an accident but seeing as that doesn't appear to be anything other than a thought it has presumably got to be money related. Construction companies are far from fluid at the moment but that doesn't mean going down the pan. Labour could be involved as I know someone who was head hunted for carpentry work as they skilled are very, very hard to find but for general stuff there are people around.
If I do find out anything solid I'll let you know of course.