Joe Marino writes:
At: http://freepages.religions.rootsweb.ancestry.com/~wmeacham/sturp88.pdf is a STURP document titled "Draft Protocol for Future Examinations of the Shroud of Turin," dated 8 October 1988, less than 1 week before the announcement of the C-14 date: "1260-1390!" Because of the leaks, the document at one point lists the results between 1220-1410.
A later section has the following comments:
It goes without saying that this is a fascinating historical document and once again makes (at least me) shake my head that STURP, which had the most experience with the Shroud and was the group that did the most meticulous planning, was eliminated from the testing.