That does seem logical
The one thing though that I think it's stubbornness is that he did it fine for maybe the first 5 minutes, then he stopped (he wanted to go into the barn), so I kept working him until he got it right and then he did it.
Also another reason why I think it was just stubbornness was that his "girlfriend" Hannah was in the barn.
But I will work with him outside of the roundpen...I used the roundpen myself because I do the groundwork in there. I'm trying to teach him to ground tie...and I want it to be in an enclosed arena before I try it in a larger one and then outside
I'll work on the arena today and then a short period just on the drive-way.
To see if it was maybe just that he didn't know he was supposed to do it then