Pinterest Recipe? Why yes, yes it is. And an excellent one at that. Easy to put together in the slow cooker and melt in your mouth yumminess!
After clicking several links, I finally tracked it down to Danielle at Let's Dish who adapted it from Wendee who posted it to Allrecipes.com (links below to their versions). I adapted it slightly from Danielle, mostly to accommodate that I used boneless country ribs instead of a tenderloin or loin. The ribs have more fat in them so I didn't add the water to either step in their recipes and did remove most of the melted fat (with a turkey baster--great fat removing tool) before adding the sauce.
We will definitely be making this again.
I've adpated it slightly from both so I'll post my version.