Okay. Slim pooped and peed in his crate this morning. He didn't prance in it, thankfully. I scolded him, cleaned the crate, and cursed the setback.
I think he felt I was getting a bit too cocky and decided to knock me down a notch or two. He also was skittish of me all day, running in the opposite direction if I even glanced at him.
We are back to Square One, Slim and I.