So Confused!

This week I did something very scary and daring. One of the most scary things ever. Despite all the threats he has given me and his Strong anger. I went unexpectedly back home, for one day. I had important documents, un-replaceable pictures, and a few personal items I needed and wanted back. I did not tell him I was coming and I went alone, even though he told me if I go I better have the little one with me. So on Wednesday I leave early AM. Two planes later I am in his town by early evening. I call him and he was pissed off. He was several states away and unless I promise to come back to him I can not get in the house. So I don't know what to do. I try calling the landlord several times to let me in but no answer. Then I get a call back from my ex, he had calmed down and said he will be here my Thursday afternoon. So through out the night and in the morning we talked on the phone. When he came in I meet him at the house with lunch. We talked, cried, had makeup/breakup sex (I don't even know what to call it, but it was good) and then talked and cried some more. Eventually I was able to pack 2 bags and a carryon with as much stuff as possible. He even drove me to drop off my rental, check me in at the airport and then we stopped to have a couple of drinks before I departed. But as I get on the plane and am coming home I leave him so much more confused then ever. I went there knowing what I wanted but now I don't know what in the hell to do! He seems to be more in control of his anger. And he cried real genuine tears as I am packing our family things and as I tell him goodbye. He begs for a second chance of which I feel maybe I should. But my ultimate worry is that if I go back things/he will eventually go back to the way it was before but this time I won't be able to get out at all. So my answer to him, If he wants a second chance then not only will he have to change for the better and for good but I must be living with in driving distance of my family. He will have to move closer. Right now that's all I can offer. However, I am still scared and more lost then ever!