Yeah. The quote he had to resign for was: "If I look at what happens to high-profile female footballers, to high-profile coloured footballers, and the abuse they take on social media... social media is a free-for-all."
He said he'd worked for years in America, were that was the politically correct term they were trained to use, and had accidentally used it in that moment. TBH, changing terminology is one of the very difficult things to keep up with atm - words / terms that were pushed as acceptable become offensive, and vice versa. Words that are still offensive, but used freely by some members of the abused group, but that are still shocking when used by others, etc. In certain situations, when trying 100% not to offend, it's very difficult to know what word is currently the accepted one to use and which one, used in innocence, may offend (for instance, when discussing the Paralympics).
But in his high profile role he obviously needs to keep up with which terminology is the accepted / unaccepted one within each country and use / not use them as appropriate. Still, it's a bit unfair if his failed attempt at using a PC term is remembered as him 'saying a load of racist and homophobic things' as if he'd gone on some kind of rant and revealed himself as a bigot.