I contacted UK Sails and verified that they did have a record of that sale. They recommended I ship the sail to them so it can be repaired properly for only $50-60. They couldn’t guarantee complete removal of the stains but they would try.
The original set of sails were damaged with the exception of a very good condition red, white and blue North Sails spinnaker. The previous owner had just purchased a new main and jib from UK Sales in Chicago (2002) and may have raised them once or twice before putting them in storage for 14 years. Still thrilled over the very patriotic spinnaker, I began pulling the main from its bright yellow nearly new bag. When I saw mouse droppings fall from the sail, my heart stopped! Sure enough, there was a couple of stains and a hole at one of the folds. But, no dead mouse.