So with the help of my assistants I tested out a little light setup I had in mind just for a centerpiece like this one. I tried it out on my assistants until I was happy with the results, then called the bride and groom to the side of the room where we had the setup and this is what came out.
One 580EXII gelled and pointed at the wall in the back, and one gelled and goboed 580EX on the table at the base of the centerpiece pointed up and towards the camera. The bride and groom are basically standing in the middle between the flashes and that's why they are silhouetted.
I was so lucky to have the help of two very professional and dedicated people who assisted me during this wedding:
A very special thank you guys, you are incredible!