Ronon's still seized by the music and that impulse to dance and be happy. He's in a half-state of awareness of exactly what he's doing. If he were fully aware, he wouldn't be doing such things at all.

He dances all over the place and in the process he comes upon Lafiel who's slumped against the wall.

"Dance with us!" he says happily, to a point where it's extremely out of character for him to do so.