Jaysus - I think you are wise NOT to send them these threads. They may have seen them already, they may not, but either way, rubbing their noses in it will bring you no good.
They will either pretend to think it's hilarious that you have so much support from an online community (and read the odd post out in a silly voice and then go "oooh - I'm scared" and collapse giggling), or they will, as you suggest, feel very angry and aggrieved and it will harden their attitudes even more.
You are doing the right thing in just stepping away from the whole carry on.
Many years ago a neighbour (someone I'd supported and refused to join a witch-hunt against for years) decided to fall out with me, too - and told lies and poisoned people against me. I found out when one of them confronted me about something I'd supposedly said.
My answer was - "It's not true. I can't prove it's not true any more than she can prove it is - but just think about who is telling you these things, and what she's been like for years, and decide for yourself who you want to believe." I left it at that.
The atmosphere was a bit frosty for a short while, then things went back to normal - nobody apologised to me, but nobody treated me like crap anymore, either. They just went back to being pleasant enough neighbours. (She didn't, obviously - she remained an aggressive cowbag)
I won't pretend it was 1/100th of what you are experiencing - but it was another Mad Cow trying to bully and isolate. When you can't prove anything - just remember - nor can she. If they choose to pretend to believe her, there's nothing you can do to change that. If you had signed affidavit witnessed by the Archbishop of Canterbury, three High Court Judges and Mother Theresa's Holy Spirit, they would still pretend they believed her- because it suits them to do so.
You can't do anything about people like that except let them get on with their madness and try to keep out of the fall-out zone.