United trailed Tottenham 1-0 when captain Fernandes was dismissed on 42 minutes and went on to lose 3-0 at Old Trafford.
Elsewhere, the panel unanimously supported the decision of referee Jarred Gillett to award Newcastle a penalty against Manchester City.
City goalkeeper Ederson was adjudged to have made contact with Newcastle winger Anthony Gordon in the 56th minute.
Gordon scored from the spot to earn Newcastle a point courtesy of a 1-1 draw at St James’ Park.
There was a split on the panel when it considered Peter Bankes’ decision to give Chelsea a penalty in their 4-2 win against Brighton at Stamford Bridge on the same day.
Cole Palmer scored the penalty after Brighton striker Georginio Rutter was deemed to have fouled Jadon Sancho.
A 3-2 majority on the panel sided with Bankes’ on-field decision, with the two voting against feeling that Rutter was “entitled to run that line” and stating it “looks worse due to the closing gap”.
The panel was unanimous in its backing of referee Samuel Barrott for not showing a second yellow card to Arsenal defender Riccardo Calafiori during their 4-2 win against Leicester.
Calafiori was shown a yellow in the 49th minute but escaped further punishment for a tackle on Leicester loanee Facundo Buonanotte in the 70th minute.
“It’s a careless challenge, not reckless, it doesn’t stop a promising attack as [Thomas] Partey is right there covering,” the panel wrote.