If the ref wasn't sure, which he wasn't as he had to check with the 4th official, he COULD change his mind. As I said the chances are not good but if there is any doubt and there seems to be quite a bit it shouldn't be beyond the realms of possibility. I am resigned to him standing by his...
The ref could admit he got it wrong and all would be ok. Chances of that happening? Not very good. If he doesn't agree it should be rescinded there is no chance whatsoever of the FA withdrawing the red card. You need to be a top 6 Premier League club to get those decisions.