Glenn: I'd rather go and know than stay and not know. (Paraphrased)
Ambiguity at Season's 1 end is a great cliffhanger, but just leaving it with Clem's scared little face - I think that's unfair. It's not like the end of the "Sopranos" because Clem pretty much WAS able to see something was coming up over the hill. We should, too!