What can his PR people do? He dont listen, they been try to get him off twitter.
A celebrity almost never really says anything themselves when it comes to things like saying sorry and covering up their a.ss. Their PR team steps in as damage control and tells that celeb what to say and what not to say to calm people down even if only momentarily.
Chris may not agree with his PR team but if he wants to save his career he will have to comply. The only thing is he's just gonna go and f**k up again because he didn't really give a s**t to begin with.
So he doesn't have to get off twitter even though they want him too. But they will tell him what to say on twitter to try and make good.