Dear Daniel,
First, welcome to ByzCath, and I pray that your experience with us will be a good one!
I can probably answer your question as an Orthodox priest. Depending on a couple of questions I might have, it would determine what if anything would be required to return to the church. I am going to pose a few simple questions, and I would ask that you reply using our PM system which I explain at the end of my post how to use.
When you left the Orthodox Church, were you formally received into another church or confession? If so, I would be curious as to why, and also why you are seeking to re-enter the church. The answers to this would be able to help me guide you. Nothing is impossible but somethings such as what you are currently seeking, I believe should be considered private at the moment.
If you click on the the underline of my name above my avatar (icon) you will see the option of sending a private message. Click on that and type out your message reply. I look forward in trying to help you.
Wishing you God's blessings.
In IC XC,
Father Anthony+