Wombat...
Go onto the Garden Web, Fig Forum, and search: "Pruning a Very Tall Fig" posted by: Artemis78 ...Feb, 19, 2008.
You will see before and after photos of a fig tree that went through a major pruning, and the results. Visually, I hope this helps you.
Frank
EDIT : I should have paid more attention, and given more consideration to your ultimate goals and plans for your tree. This reference will be of little use for you. Sorry if I wasted your time.
You'll probably want to retain the BASIC structure of the tree, but also want to do major, corrective pruning, and cut out all branches that cross, grow towards the middle of the tree, etc. A basic, tree pruning site will give you some help. There are also fig pruning videos on YouTube. 75% of that tree can be cut away...but, I'd do it in the spring, as suggested. You could start cutting some extra branches away now, but leave the majority of work for next season. If you don't already have one, you will need a good pruning saw for this work.
Good luck.