The flight crew did a great job on that abort! Looked like a textbook procedure.

I fly fly a Hawker 800XP that has a rudder bias system that compensates for a failed engine. Bleed air from both engines are routed to the opposite end of a piston/actuator unit that's connected to the rudder. With both engines running, bleed air is equal and no rudder deflection. When an engine fails, bleed air is lost on one side of the actuator driving the rudder to compensate for the asymmetrical condition. Pretty simple system and makes V1 cuts much easier.