The punch is confirmation they mean business, they didn't go in there and talked s**t to him and that's it. They actually punched the dude, it doesn't get any more clear these dude meant business, they went in and quiet down a s**t talker who pretty much begged for this to happen by s**t talking.
Now do I expect Budden to do the same to these dudes? of course not, he ain't going to make the situation worse for himself. The situation he started is now over, we seen the ending of the movie, its a wrap.