I usually don't have a problem falling asleep once I wake up. I was able to wake up every night last week and record a dream and fall asleep again in under 5 minutes.

I would probably chalk it up to my body being off it's normal balance since I have started my experiment. Typing this now though..I just remembered I was experiencing a lot of hypnagogic images as I was falling asleep before the bout of insomnia, so I could have just got myself overexcited. The images were very similar to what I experienced last time I followed an image out of my line of vision and experienced the sinking into the couch sensation followed by the FA.