Oh fantastic. She didn't have the wand in her hand when he cast the spell, of course.
Remus had torn the stinky blanket off his sight when it threatened to engulf him but when he'd dumped it to his left side, the witch's wand had turned into a whip and his...well, his wand is still a piece of stick. Whips were unwieldy things, so he decided against imitating her.
Letting out a bit of breath as he tensed himself for a fight, he managed to mutter out, "Not as often as you would." Grand night for an escape, he'd say.
The tip of her whip had scratched him at the heel of his palm but he'd stepped back in time before he dropped his wand. That patch of skin itched, and he was tempted to attempt to disarm his opponent again but decided against it seeing how effective the last one was. Instead, something like a spark erupted from the tip of his wand and he flung it to her direction by a toss over his left shoulder.