Hoser, very funny but hey, even if you have killed someone lately and there arent two witnesses, you're still probably safe!
On the serious side, you might make it if you go inactive but my experience is that although you don't get as much attention from the elders as an active Witness, you're still not completely overlooked. Around Memorial time and twice a year when the CO visits, there is a big push to contact and reactivate those who have faded away. The ones our BoE really leave alone are the ones who don't leave a forwarding address. That's about the only way to get lost permanently.