that is that in fact the climate scientist did urge manipulation of the data to the East Anglican climate scientists

If you are referring to "hide the decline" this will not prove to be in the favor of the defendants. The best they can do with that is accuse the climate scientists of using a suspicious sounding phrase that could confuse un-knowledgeable individuals looking for conspiracies where there were none. Whether that defense will fly in court I don't know, but the prosecution can certainly point out that before leveling the defamation they did based on that phrase, the idiots should have read the paper and looked at the technique referenced by that phrase, and understood it, before claiming it was a conspiracy to alter data.