maybe shu-ya pointed with a wrong finger or maybe a fan made insult to him or someone else with a sign or something, I find it funny though, or maybe someone yelled out something to try and throw him off but other than that its, he probably get a talking too by ayu/staff or Maybe Manuel was in the audience and shu-ya gave him the bird lol
but it does look like he just stumbled and I guess someone laugh or made some type at fun at it and shu-ya didn't like it but its very unprofessional if he did
and the BRILLANTE performance was the best with the wind machine, cant wait to see that on DVD