Rochelle's signal is what Misha was waiting for; she's quick as a wink to ambush Tracker, quickly nailing him in the back with a large syringe (Shaped like a baby bottle) filled with Poppy's transformative drugs, stewed into a far fast acting fluid. Within seconds of her first push on the plunger, the medicine rapidly converts bone and muscle into plush, causing Tracker to lose his footing as his legs give out, completely unused to the lack of muscle and bone.
He tries to see who is doing this to him, but the brim of his hat and his weakening neck make the task into a uphill battle. As his body completes its transformation, he can feel some sensation come back, as well as something missing. But before he has any time to properly regain himself, he hears the clicking of handcuffs...