You might be able to run 27" wheels with that Surly fork. You could ask Surly and maybe they know. Or as Neal says, you might be able to run 700's front and back. It all depends on how much adjustment room you have with the brakes. The biggest negative is cost. You'll need a new headset and stem if you go threadless but it is a better system IMHO. Then if you go with 700 wheels, you'll need new tires, rims and spokes at least or just a new wheelset.

For the best answer on fixing the fork I'd take it out of the frame and post a question in the framebuilders sub-forum with some good pictures.