WHOO HOO! Thor is peeing on command! It's incredibly cool.
The pooping has gone a little haywire now. I think he likes to have a "clean workspace" for #2 and now that there's actually pee on the pad, he wants to poop on the rug. I have been a lot better about catching him in the act for the poop though, so I think that should come back quickly.
I really think I see a light at the end of the tunnel now (knock on wood). I'm putting him on the pad every couple hours and telling him to go.
1/2 of 30 free accident-free days and counting!