Reality Check
Penultimate Amazing
If you read your own link, it has nothing to do with climate science, the subject of this thread, or any trial of Mann.
It is a request for the finanacial records of the UVA about grants that Mann got payments from and private emails. The American Tradition Institute seems to be basically harassing Mann though legal means which seems to be a current denialist technique now that they have out of scientific evidence for their stance. If ATI win then this case will provide a precedent where any lawyer can read the private correspondence of any scientist. This will be devastating for science in general where a free exchange of ideas and robust criticism of them is necessary.
Mann will not be found guilty of anything in this legal action against UVA. So that part of your post was wrong.
Your link is out of date. Timeline: Legal Harassment of Climate Scientist Michael Mann has a more current list of th actions against Mann where the Virginia Supreme Court threw out Kenneth Cuccinelli's FATA case (mentioned in the link):
So it looks likely (in my limited knowledge) that this FOIA action will also be thrown out.March 2
The Virginia Supreme Court rules in the University of Virginia's favor in the Mann case, with the majority finding that the university is not a "person" as defined in the Fraud Against Taxpayers Act (FATA), and therefore the Attorney General has no authority under the Act to make civil investigative demands (CIDs) of the university. (See UCS press release.)
If you want to learn more about the ATI then there is this article: Who's behind the 'information attacks' on climate scientists?