Have you read the shedding stickies? If you haven't, I think they might have some information in there about retained eye caps. If it's a difficult one, I've seen people suggest taking the snake to a vet and have the vet take it off.

As far as him being interested in chomping on you, I highly doubt it unless he's extremely hungry, or you smell like a rodent. One of our friends tried telling us that if we were to handle our snake by our desk, it would attack the mics we have. I haven't proved it, but if it doesn't smell like food, I doubt they're going to think about eating it.