It's been mulled over in the thread, but come on. He stopped just before he kicked it. It should have been retaken due to encroachment. Some of the players almost made it into the bac of the net before the ball did.
He's just playing politics here. Although IFAB has authorised the use of VAR, there are several Premier League clubs ready to block it, so Glenn is trying to persuade them that the recent difficulties were due to incorrect implementation by the officials.