It seems like just a mild stage of LD, since I can never work up the willpower to control my own actions in the dream. And said lucid dreams only seem to happen right near the end of my REM period, where I'm beginning to wake up, so within a few seconds of the crying beginning, I wake back up.

Also, there's never any reason for the crying, as far as I can ascertain. It's just crying.

Maybe I should post this on the interpretations forums. It's happened again a lot.