Remote Sign Off

Hi, recently I had to take an unexpected day off and I left my computer at work. My planner was open because I use it so frequently. When I returned the next day I was told there was some snooping going on. So, is it possible to have a remote sign off? I though about it and it would have been so wonderful to just click "sign out on all other computers". I may be kinda paranoid but my lessons are kinda my babies and would only like to share voluntarily. Just a thought.