Well, my view on it is what I've learned over the years of practicing both...basically in a nutshell spirituality can only be practiced or believed in as a concept if a person believes that there is in fact a spirit in him or in others. Otherwise it beats the purpose of its name.
On the other hand, religion is the organised and guided manner to practice spirituality. No religion can exist unless it acknowledges as its basic tenet that man is a spiritual being. Unfortunately, modern perceptions have led to people confusing the two with each other, and now (I'm generalising here) people tend to believe that a religious person is a spiritual person and vice versa. While the first is possible even though he doesn't have to be a practicing religious, (because his basic belief in religion stems from his belief that he is a spirit-based being), the second doesn't have to be possible because he can believe in a spirit-realm and his own spiritual existence, but doesn't want to get involved in organised worship or acknowledgement.