I have had similair situations. Sometimes, when I am extremely sleepdeprived and wake up still half dreaming, or when I'm experiencing VERY intense feelings( usually negative) I can feel VERY dissociated from reality. Up to the point it comes close to a psychedelic mindtrip. I thought about how easily this state of "shifted" awareness can be mistaken for a Dream. There have been serveral occasions where I was REALLY surprised to find out I WASN'T dreaming.
I actually had a NEAR-Lucid dream pretty much the way you THOUGHT you were lucid(Clock was out, lights wouldn't go on), but at the time I "reasoned it away" by concluding: There must be a power out. So the opposite of what you experienced

I've always kept in the back of my Mind: "what if RC's somehow fail?" and as a safety rule I have decided that, might I go lucid in a dream(or think I do) then I will never fly jumping straight out of the window, but always vertically levitate off of the ground before taking off like superman: Problem solved