I write using Fake Pokémon all the time, so I have a huge pool of made-up moves that only they can use due to what they are. For instance, one of my legendaries is a phantom wolf heralded as the God of Death in my stories and his signature attack called Reaper Fang cannot be used by anyone but him and his minions, which also happen to be lupine fakemon. So, my stance is basically that, if you're going to make up a move (or even a different-type variation of a move), actually create one that doesn't exist. It's just weird to change the name for one that exists just because you've change the effect for the story. But then, if all you're concerned about is Disable, you could just use it like they did in the anime and have it stop the victim from moving momentarily rather than just make it stop using a certain move (yes, that is something that actually has been used in the show several times, so it would be considered canon in that case).