Here and there... We do say "good boy" etc in the screaky voice and then he jolts inside and we give him a treat..
We don't, however, give him a treat the second he is done. We also don't usually take him out on a leash..
I read those articles and they sound good.. What I'm worried about is that I truly think he think's the basement is now his place to go.. I don't know how +R, giving him better treats (good idea), and taking him out on a leash is going to break his thinking that he's also aloud to go downstairs..