Great to meet a fellow believer! My motto is the #paranormalisnormal and it sounds like your on the same page.
First I'd like to thank you for taking the time and trying to give me a hand with explaining what I saw that night. The residual memory idea is great (you know your stuff), I do believe that many people that see ghosts in homes are actually experiencing that phenomenon. Like a person image on loop, or like you said a glitch in the matrix. I am not religious so I try and steer clear of the word demon, I believe that's just a way that early man classified interdimensional beings. So was this an interdimensional being? Maybe, it seemed to be a real as you and me. To be honest I am still scratching my head. This felt almost personal...I don't consider my self that important though in the grand scheme of things...so I don't know it was very strange. Either way I think all your theories and thoughts are very possible to help explain what happened that night. I hope you stick around seeing as we seem to be on the same page and its good to have well researched and honest responses. Thanks again for the awesome comment.