I agree that the Goldstone report should be retracted in whole or part. However... accompanying that retraction should be a report on the danger of obstructing a UN investigation. Israel had the option to co-operate with Goldstone and chose not to. In a civil suit with details analagous to this situation, there is no honest judge that could find the defendant (Goldstone) solely at fault, and damages would be awarded accordingly.
Rocket alarm sirens sound in southern Israel (Haaretz)
from the article: Barak: Goldstone should retract Gaza report in international forum