The main reason the pylons are there for is safety.
If Boyd was worried that his horse might go down he should've gone inside the last couple of pylons. Mind you, it is a split second decision and likely a natural reaction to take back.
If he does go ITP the worst case scenario is he still crosses the line in second, like he did, and wouldn't get placed back.
Best case, his horse goes by, he proves he had the best horse, and the judges leave him up as he was "forced inside the pylons".
Many horses go inside the pylons to avoid breaking horses and are not DQ'ed.
Signed
Donnie McElroy
