If a typical day-job, 9-to-5 office worker says something like that at a Wal-mart or in a restaurant, and it gets into the public domain, then he/she might possibly get a pass. If he/she said it while wearing or representing his/her job (logo on the shirt, or just telling people that's where he works), and THAT gets into the public domain, then he/she could be penalized, even being fired depending on severe the comments were.
If that person does the above while actually on the job, on the companies clock, then unless he/she is the son/daughter of the owner, pretty much expect them to be looking for another job.
For a broadcast personality as well known as Brennaman is, to say these things while on the clock - whether it was a hot mic deal or not matter not one bit - he might as well have shouted out the word(s) when a player hit a home run -
"the pitcher toes the rubber.....the wind up......its a bit insi - the batter takes a big swing.....it's got a chance......the outfielder is at the wall!......IT'S GONE!!! %$& CITY, YOU GOT YOURSELF A HOMERUN!!!!"
Its been said more times than I can recall after these so-called hot-mic gotchas - when you're on the job, ACT like you're on the air AT ALL TIMES. Wait until you get home to curse or use racist epithets, if you have some weird need to. Act like you're in church - you don't whisper profanities to your wife sitting in the pew between sermons, or right after you sit back down from singing a hymn. These network celebrities get paid well enough to know how to act in public - if they still feel some need to act out, then they deserve what comes their way.....