I just tried the commands while lying on the floor too. Cooper did it no problem, Dutch gave me a LOOK before he did (Dutch is kind of a stinker) and Daphne did too, then she got anxious & belly crawled to me on the down to lick my face.
Spoiled...playing tug will not cause a dog to try climbing the ladder. It can actually a good way to teach a strong minded dog to play nice AND obey, by ending the game, teaching drop, sit, down etc whereby the dog is rewarded with a quick tug game on compliance. I bet Bentley was just going through his teens
...how old is he & what sort of dog?