An electric display from the Bulls saw Mark Ward claim a win on his managerial debut in emphatic style.
Ollie Fearon earned a brilliant hat-trick to help stun Dynamo, who had beaten the Bulls 4-1 only two weeks previously.
The first chance came early on, as Fearon headed Liam Marsden's long throw just over the crossbar.
But the striker would soon get his name on the scoresheet, firing home into Charlie Taylor's bottom corner from 25 yards out on 19 minutes.
Dynamo almost produced a response with 10 first-half minutes remaining, as Alex Steadman's cross was diverted goalwards by Danny Gordon, forcing a save from Jason White before Liam Marsden threw himself at Steadman's rebound to keep the Bulls ahead.
Just before the break, Fearon came inches away from a first-half brace when he smashed his effort against the woodwork from a tight angle.
With just two minutes of the second period played, Fearon doubled the hosts' advantage when his header from a free-kick crossed the line before an attempted clearance diverted it firmly in off the crossbar.
A hat-trick seemed to be destiny for the forward, and it was sealed when he headed home Charlie Dawes' inch-perfect cross.
After the third goal, Dynamo began their assault on the AFC net, and almost reduced the deficit when Kyle Bryant's volley skimmed the crossbar.
Karl Demidh was left kicking himself only two minutes later, heading Rya