And on the flip side Mike Dean, who isn't representing PGMOL, said he thought it was a red card. I'd have been happy with yellow or red, but I think the appeal commissions overturn things far too easily without really understanding the law that the sending off was based on. We'll have to wait for the written reasons to be published, but I suspect it will contain nonsense like "it was an accidental challenge" or "there was no intent", neither of which the referee can take into account when making the decision on the day.
I don't care whatever anyone says to the contrary, I will never be able to comprehend a system where people with zero qualifications in the laws are able to overturn decisions made by active and qualified referees. It just makes no sense.