He goes to the left too much (overshoots it with momentum, but Pidcock was against the barrier at first, he just started to go right again probably trying to weave and break the slipstream), but elbows? This is just Christens way of sprinting? His right elbow does the exact same thing as his left elbow, that's a reach imo.
I think Van Gils immediately realizes he is on the wrong side so he decides to come next to or overtake Christen asap before the door closes, but Christen doesn't expect it cause it's a pretty weird move. I can't look into Christens head (and I don't really rate his brain capacity highly), but neither can everyone here. In this case only intent should warrant a suspension imo and that's just hard to say here.