[Q] sudden strange michael jackson video lock pin screen?? topic

Galaxy S4, stock, not rooted

haven't installed any apps recently

woke up this morning to a very strange situation

phone was locked asking for pin code, when entered the screen was covered over with a michael jackson "beat it" video on the top half and audio of the lyric "beat it" was sung over , and the bottom half was my normal android screen but it was not responsive, as if the music video screen was "overlaid" , then it would go back to the lock screen again

tried google to reset pin which seemed to happen but didn't change the lock situation on the phone, pulled battery, etc.... still locking, google was able to get the phone to ring

is this a virus or trojan? strange to me I can't find any mention on the internet of this "beat it" video pin lock phenomenon, as it is the phone is unusable

any ideas? anyone heard or seen this before, I'm at a loss as to what to do or what even happened