There's no reason for Roland to doubt that the twin teens were at it again, full trust placed on not just Inigo, but for both of them that he'd get out of this escapade completely dry. During his trek back, he takes a moment or two to slash away at other pieces of debris.

Just to make it easier, see?

But he never really stops per se- Roland just makes timely stops here and there to ensure Tidus's plan went without a hitch. He looks up and rounds a quick corner, opting to take the long path uphill.

"Coming up!"