How do you report someone for wrecking?

Is there a better way than just through xbox live?

Go to the Rules of Engagement post that is pinned at the top of this page. Number 10 gives you instructions

PM SnowOwl. You won’t hear his wings but I sense he is on his way …

Basically, after every race, save the replay, remember the wreckers, name the replay, pm snow owl, give him the name of your replay and the tags of the wreckers, leave it at that. Hardly a solution having to drop out of your lobby and crack up the laptop after every race, but it’s all you’ve got.