You were having a LUCID dream, which in turn led to a brief OBE. A "lucid dream" is one in which you are an observer, or spectator of the action...action which may include you. In other words, you may observe yourself. You are able to interpret the action, and sometimes derive some meaning from it. Sometimes you can control the action.

An OBE is an "out of body experience" which pretty much speaks for itself. We ALL have OBE's, but don't always remember them. Think of it as our soul or spirit "going for a walk and getting some fresh air".