Thanks for this but at this time I restored my site to a snapshot of it from last week, even though this caused me hours of work today! I will keep your post handy in case I have any future issues.
Well???
The Plugin maker blames my Host (SiteGround), my Host blames you guys… and now you guys disappear…
When the plugin was disabled it was all removed. I just checked it again to confirm this was the case and it was.