Big Rog, it is not necessary to have the halyard above the forestay to fly the spinnaker. With it below, you have at least three choices, 1. Pull down the sock to snuff the spin for the jibe and roll it through the foretriangle. 2. Set up for inside jibes with the sheets going inside the foretriangle. 3. Accept the fact that you will get some chafe on the halyard and cut a few inches off every once in a while.
I would suggest you try one of all of these options but don't give up the joy of flying your spin until next year just because the halyard in not ideal.