James Olley of the London Evening Standard explained the Dutchman fell over in front of fourth official Mike Dean to insinuate Sanchez's supposed simulation. Squawka provided an image of the incident in question:
Van Gaal has come under fire this season for allegedly promoting a boring brand of football, but the tactician did everything within his power on Sunday to ensure his performance was anything but.
Speaking to the media after the win, Van Gaal told reporters he later apologised to officials, according to broadcaster Ian Irving:
As bizarre as his actions may have been, many United fans may actually come to appreciate the show of passion from Van Gaal, seeing it as evidence of how much he cares for the Red Devils.
Samuel Luckhurst of the Manchester Evening News provided quotes from Van Gaal, who admitted he often sits back on his bench a lot of the time, but refused to remain quiet on this occasion. Meanwhile Arsenal chief Arsene Wenger gave a muted response, per ESPN FC's Miguel Delaney:
The Red Devils boss would undoubtedly accept grass stains on his suit for the remainder of the campaign if it meant he could guarantee what he thought to be fair refereeing for the end-of-season run-in.
Sunday's win means Manchester United are back in the Premier League's top five and seeking even greater scalps, and fans can only hope to see more of Van Gaal's more animated side in the fixtures to come.