If his parents focus on his education, they are fools
This kid needs treatment, probably a rehab, and to learn about humility. Sending him to a third college at this time would be a mistake. His best hope (in my opinion) is that he is an alcoholic and that removing booze from his life, that most of the obnoxious goes away with it. However, if it is mostly characterological, treatment would be slow with an even less chance of positive outcome.
Obnoxious as he showed himself. I also feel bad for him in having to be immortalized by social media. His children will likely find this video one day. While I never spit in someone's face or was rude to a worker like this, there are a lot of things that could have haunted me if caught on video.
And we don't throw people away. Especially when they are 19