Scotillo and witness taampering?

Witness tampering is harming or otherwise threatening a witness, hoping to influence his or her testimony.

In the United States, the crime of witness tampering in federal cases is defined by statute at 18 U.S.C. § 1512, "Tampering with a witness, victim, or an informant". The punishment for such an offense is up to 20 years if physical force was used or attempted, and up to 10 years if physical force was only threatened. The tampering need not have actually been successful in order for it to be criminal.

http://en.wikipedia.org/wiki/Witness_tampering

What if, Wenrich or Hunter that were high on drugs on my arrest, wanted to change the testimoney as to be less creditable. But the assistant states attornies and judge deceided and ordered the police officers not to change their story.