No one is suggesting that anyone “plucked a couple of threads from one of the samples before it was sealed and with no recorded documentation”. If you actually read any of the documents that have been linked here in this thread, you would know that the discrepancy is due to the fact that the sample was cut from a section of the cloth that had been repaired in the 16th century (I was mistaken when I said 13th century, previously), using a method of
reweaving cotton fibers into the actual cloth in order to make the repair.
That method of reweaving is used by people that repair ancient tapestries that have been damaged. In effect, they carefully attach
new individual threads
to the old ones, and copy the weaving pattern of the original cloth in an attempt to make it look identical, and invisible to the naked eye. In this case, they used new cotton threads to replace the original linen. In more recent studies of the cloth by textile experts, they have magnified those patches and it can be clearly seen that the reweaves look very similar, but under magnification the difference between them is very evident. That is the part of the Shroud where the CD 14 samples were taken, so those samples produced the flawed results.
All of this information was presented in the series from Women of Grace on EWTN that I linked to, earlier in this thread. Look at >>>
this episode<<< that covers all of this information on the problems with the CD 14 testing, and shows the closeup pictures of the patches in question. It will be well worth the few minutes it will take you to watch it. You might just change your mind. Maybe not. But, at least you will see what the controversy actually is. (You can skip to just shy of the 6:00 mark to get to the CD 14 discussion and see what you think.)