Unless there is more to it that wasn't a sting - that was just a horse coming good on the day - apparently to everybody's surprise.
it had a BF SP odds >100 etc so no one was on it.

it seems no-one would have been more shocked than the connections,.

my understanding of a sting is when it opens at a big price and is backed to a fraction of that price and WINS.

In fact as a horse owner i would get upset when a horse runs well at a big price because it indicates no one was on it ( in this case even for a place)- i say to the trainer - " surely it must have shown you something that it was ready to run well and we could have had a bit on it to help us pay your bill"

JMO