Oh my, what a scary thought!
But to me that story sounds like a reddit scam.... Thinking logically, I don't think there's any risk of that ― There is little to no air ventilation inside an animal and not that much space for air either, so even if it were to regain consciousness, I am pretty sure the feeder would suffocate after a few minutes! Not to mention all those nasty acids that are going on inside of stomachs...