Yes. We could make it so that it was the lackey's call to do it, without instruction, so if he fucks up it's entirely on him. And as punishment, I'm sure Goshikuro has enough power to destroy him, or severely torture him even now. It also gives him away too much and Kurama/Yoko figures out who it is, even if they can't believe him to be alive.

I see. So we need to decide on how Kurama figures it out AND saves her. Are we both in favor of the lackey being an idiot and basically gloating to Kurama about how powerless he is, which leads to him revealing that Botan is in danger? Suddenly the mood changes and mannerisms make complete sense. Botan was being influenced and Kurama, in his own arrogance, didn't believe that Botan could be swayed by someone skilled enough to have avoided detection from Kurama thus far. So he saves Botan just in time, confronts that same student later only to find out that he's normal again, and that the lackey had either left his possessed form or jumped to another student to keep them on their toes? 

Either way Botan's going to be flustered with how many apologies she'll have to make to Shiori, because that's the future mother-in-law and you don't want to offend her :3