I think those who say that the persona JC presents on TV is just an act, his comments are not really meant but are just made for humorous effect are wrong.
He is well known for his dislike of speeding laws and "health and safety" and some time ago was photographed driving one-handed at 70mph on the motorway whilst speaking on his mobile. Astonishingly he only received a letter of warning not to do it again from the police, as they claimed there was "not enough evidence" to take it to Court.
While in Australia he tweeted saying what a wonderful time he was having driving along with "beer in cupholder".
I knew the term "slope" was racist - I've heard it used in old American war films - and I'm surprised so many people appear not to have heard it before. Why was the comment made about there being a "a slope on it" unless it was poking fun at the Asian man at the far end of the bridge - there was no other reason to make a remark about something so uninteresting.
He's a multi-millionaire and has friends in high places so he's got away with a lot more than most people would. Unfortunately, even if they sack him, there is always a market for the sort of nasty juvenile "humour" that he peddles.