Let's say Clint Bowyer's car was illegal after the Richmond race. NASCAR didn't want to penalize the #33 by giving his Chase spot to Ryan Newman. Much the same as they won't take the win away from an illegal car. Not to mention, what if they did give the slot to Newman, then RCR appealed and NASCAR's ruling on Bowyer was overturned.... after the Chase had already started with Newman in it?
Then, let's say NASCAR told RCR they were fortunate, and not to bring the same set-up back to the track. So, (hypothetically, of course) what does the #33 do? He smokes the field the very next race. NASCAR was not amused. Then the very public payback to RCR began.