I'm just getting around to this thread now PJ. Sorry for the late reply.
Yes, I agree completely with the hypothesis here. I think WILDS are a real phenomenon. I believe I have them. However, I have come to believe that the majority of what I characterize as WILDS are probably really DILDS.
Here's how I personally came to this theory ...
Most of my WILDS have me experiencing head and neck vibrations. I can turn this on at will sometimes. Well to me, this has to do with expectations rather than a transitional phenomenon. In other words, I'm already dreaming, I expect something (vibrations) to happen and it does.
I also believe most of my DEILDS fall into this category. I never really truely woke up. They're really FA's into another perceived WILD.
Sometimes the transition from awake to asleep is so incredibly subtle. As anyone who has every been in my DJ knows, most of my lucids start where I left off in my wakeful space ... right on my dream couch.