Just a theory, but I'm going with the notion that they will want to make Rick special....so my theory is that all of the upcoming episode 5 will be memories and hallucinations because Rick dies on the concrete and metal bar. The twist I'm predicting is that HE DOESN'T TURN!....one of the main cast finds his body and he is just plain dead...so the race is on to get Ricks blood to somewhere that could make a cure! (He's humanities ultimate hero!)