Bring him here - pooping all over the carpet is accepted and expected
Baddog, just because he's stiff doesn't mean he's in pain. My 11 year old lost control in his hind legs over a year ago. I had him checked by his vet AND a specialist and both have assured me he's in NO PAIN. And he certainly doesn't ACT like he's in any pain. Jumps around the best he can, eats like crazy, humps the other dogs (while using them to prop himself up with....), etc. If I thought for one second he was in pain, then I'd put him down.
As of now, I can't rationalize putting him down just to make it easier for me. No way.
Best of luck CD!