Level 7 Referee
This is what I was referring to. VAR as it stands is limited to intervention in four cases and that's it. Preventing an error in law outside of those four cases is not something he should be doing. Perhaps it should be allowed in limited other cases but it is not. So here, the VAR, in preventing an error in law by the referee, made an error in law himself.VAR saved the R from the incorrect sub. (And it still boggles my mind that one of the 4 on the field didn't catch that instantly . . . )
If VARs were free to prevent referees from making an error in law in all cases, then they can intervene everytime a throw in is given to the wrong team which technically is an error in law.