What is needed is a way to access the Plugin-Manager's list.
Anyone know if it saves it in a file?
Look for a posting by "mudgel" and click on the link underneath with all the user tools.
There may be a tool there that might at least help half-way.
But I don't think there is any tool that can test a plug and find out if Sonar likes it or not.
I have always had to weed out bad plugs manually.