Boston Globe reporter @BethTeitell made a post in a Karen Read support Facebook group looking to find people who changed their mind and thought Karen Read was guilty. She had her narrative written - FKR is a cult that you can't leave - and just needed some people for anonymous quotes in her story.
https://tbdailynews.com/canton-coverup-part-503-boston-globe-reporter-beth-teitell-interviews-amy-deangelis-and-other-mentally-unstable-women-obsessed-with-turtleboy-for-hit-piece-smearing-karen-read-supporters/

According to Ryan Whitney and Dave David Portnoy - El Presidente they were confronted by a witness from the Karen Read trial who Portnoy claims he watched in a video get into a confrontation with Turtleboy. This witness offered to use his time on national television to do a paid promotion for Portnoy's failing watch company, which tells you how seriously the McAlberts are taking a murder trial. That narrows it down to 3 douchebags. My money is on Tristin Morris: https://tbdailynews.com/canton-coverup-part-502-which-witness-who-confronted-turtleboy-offered-to-use-karen-read-trial-testimony-to-do-paid-promotion-for-dave-portnoys-failing-watch-company/