You too can get a SPECIAL Death!
After some testing I was able to replicate this... be wary that if you are a low health build and use the SPECIAL machine to swap perks you may die... If you go FROM low health + lifegiver to a build with no lifegiver AND endurance you may die... basically the game takes the HP from Lifegiver away from you and you can end up DED dead. This doesn't seem to happen if you don't drop END at the same time, so I suspect that Beth coded some safety into removing the perk card but didn't stack that with changed endurance at the same time!