I watched this replay about a dozen times. I don't see where Gordon did anything wrong besides not give Boyer any room. Boyer made an illegal pass on the apron, and slid up against Gordons car. That's what I saw.
Regardless, they are both cry babies. Bumping is part of racing.
There's no rule against going on the apron at that track.
And Gordon admitted in taking our Clint. So Clint did not slid into Jeff.