I'd scrap VAR at the earliest opportunity, and football might return to a resemblance of its old self. Non-league football interests me a lot more these days.
I would not necessarily scrap it. I would demand that they use it correctly.
The idea of a 'backup' to ensure fairness is not a bad idea. The fact that it is being used by one of the most incompetent, and possibly corrupt, organisations in the world of sport is the problem here.
If the ref does not see it and trusts the decision then fair enough, but it just cannot be that easy in football, especially with this kind of decision. In Rugby, now and again, a ref will give a penalty, knock on, etc. simply based on the TMO in his ear. He does not need to look as he trusts that the TMO is competent enough. On the bigger issues the TMO will send it to the ref to review. There are very few issues with the TMO process, it is not perfect, but it is better for the game to have it.
This is a bigger issue that absolutely 100% should have gone to the ref. There are no ifs and buts, the ref makes the final decision and now he is looking like an incompetent buffoon because he trusted the other buffoons to make the decision for him.
If I was in control, my first port of call is to get Rugby involved, speak with them, learn from them. Get maybe retired refs directly on board to train the incompetence out of football refs.