Not that VAR is infallible but I think VAR would definitely have helped here.
I don't think a referee would give that on VAR review, however after the fact they and certain others have to contort themselves to explain away any such decisions since clearly there is no going back anymore and it's basically just an exercise in saving face which is very important to certain sections of football. As has been proven many, many, many times too there is very little to no downside in siding with the bigger clubs and shitting on the smaller ones. No media outrage on TV and radio, no daily opinion pieces in the tabloids, no FA reviews, etc, etc.
Incidents that favour the bigger teams basically just get whitewashed.