This is probably what happened:

Sehun: Hyung, come here for a second.

$uho: Eo Dongsaeng, what's up?

Sehun: *stomps on $uho's foot and walks away*

$uho: W-What'd I do?

*****

Director: *looks through footage* Dammit Kai! You dropped your hat!

Kai: Who cares? I'm y and fabulous.

Director: Well, i'm too lazy to shoot another video. This is good enough. 

*****

Director: *looks through footage again* DAMMIT! Baekhyun! Luhan!

Luhan&Baekhyun: Y-Yes?

Director: Baekhyun, why were you with M? Luhan, why were you with K?

Luhan: I-I didn't want to leave Sehun's side.

Director: Why not? You ruined the video!

Luhan: Actually, he request that I stay by his side. 

Baekhyun: See, it's not my fault! Now leave me out of this. *walks away*

Sehun: *runs towards Luhan* Xiao Lu~ let's go get some bubble tea now!

Director: *facepalm* what's wrong with you guys?