The Corkscrew Armbar 

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This technique is a perfect follow-up when your opponent is pushing your leg down but withdraws their weight, making traditional sweeps like the Dump Truck Bump Sweep unfeasible.
Initial Setup: You start in the guard with your opponent attempting to push your leg down to pass. Use a stiff arm to maintain distance as they drive forward.
Arm Control: As your opponent pushes, swing your arm to trap their arm. Typically, your opponent will hide their arm to prevent a Kimora or an armbar, setting the stage for the corkscrew move.
Adjusting to Their Movement: Unlike the Dump Truck, where the opponent’s weight is on you allowing for a sweep, in this scenario, your opponent pulls back, not committing their weight forward. This reaction requires a different approach.
Execution of the Corkscrew: Maintain a strong hold on their arm, straighten your arm to maximize leverage, and then swing your head underneath their body to shift positions. Use this movement to hop your leg over their head, positioning it to catch the arm securely.
Securing the Armbar: Once your leg is over their head, ensure your knee pinches tightly against their arm to control it. Then, as you settle back, rotate to align their arm against your hips. This position allows you to apply the armbar by extending their arm against your thigh, using your hips to elevate for the finish.