Hey,

I've often encountered the same.

From my personal experience, I actually consider them positive. I think they're the beginning of a dream. When I'm trying to WILD, I will begin getting hypnagogic imagery, which will then turn into those dream snippets you describe. The difference here is that I'm experiencing them with all five senses (my last one was of me standing in front of a fridge, and feeling the cold as I placed my hand inside, and then the deeper cold as I placed it in the freezer). I'll also no longer be aware of my waking surroundings and body.

Quite often though, like you, I will snap back to waking at this point. But every so often these dream snippets will develop into a full WILD.

-Redrivertears-