I don’t think so, because after that he said he still had to fire the person responsible for the loss, he just didn’t want to hire anyone who would call himself “white trash”. Here’s the clip, judge for yourself.
https://www.youtube.com/watch?v=3A-Z5sRwgLM
looks like you are right and I am if you listen to the guy he uses it as an excuse but trump is very clear about not liking the term white trash. I think what got trump was that he doubled down and tried to treat it as a joke and like I said it is as loaded a term as nigger is and trump decided to make a point when the guy did not see anything wrong and could not be told that it was bad.