It's not going to be considered a deferred admission because you have actually matriculated and attended classes. As the poster above stated, this will likely be addressed in your MSPE (for residencies).
Taking an LOA (compared to tanking your coursework) is a sound thing to do if you are not sure that you can devote your full attention to medical school. How this will work out for you will be largely determined by how you perform once you return to school (if you return to school).
One of the smartest people in my class left after three weeks because he decided that medicine wasn't the course for his life. He is now very happy and very successful as a Ph.D psychologist. In short, medical school wasn't for him and isn't for everyone accepted or not.
Take your time, figure out what you want to do, and if you return, be prepared to devote the time to your studies that they will demand. At this point, there is no particular "spin" that you can put on this other than you took an LOA for personal reasons that those reasons will either resolve or they won't.