"I would have to agree with you, though I do not think we've yet eliminated the impossible.
It could, of course, simply be a very vivid dream. It isn't as though odd dreams are new to you. This could simply be an extension of your night terrors. A more mild form of them that does not cause you quite as much stress. They are, as you say, alarming, but not terrifying.
Have you had any terrors since the other dreams began?"