Gunners stars dined at trendy Mayfair restaurant Novikov with the management following their catastrophic defensive performance in the 2-2 draw at Vicarage Road.
In an attempt to salvage team spirit, under-pressure boss Emery told his squad that the critics were watching for their reaction.
The Spaniard ordered them to put on a united front — despite huge cracks and factions developing within the dressing room.
Emery wants to portray the image that the players all get on and are a tightly-knit unit.
According to Arsenal insiders, there is a lack of discipline at the club and Emery has struggled to exert any authority over an unruly dressing room.