Are you saying that Regan Smith is responsible for Kasey's spotter, and Kaseys failure to know that the high line is fast on exit? Kasey said 'He called me clear and I thought I would be clear on exit'.
THAT'S the whole problem right there.
The problem is that Smith stuck his nose in a hole that it should not have been in on lap 15 lap 470 thats a racing incident lap 15 thats unnecessary.