I can't recall myself either, haha It's a mute point as all teams want to win the championships and The riders on that team if in a position are expected help the cause. Team mates have done it many times in the past.
Labeling Eli as dirty racer is a bit far fetched. If he wanted too, he could have blasted him off the track multiple times,
instead he tried bunching up the riders and see what happens.
Eli did not invent this tactic it's been done before. m