Reeve was actually forgetting his own issues with this place and how it was presenting his memories thanks to talking to Donnie.

"Yes, that sounds similar. Cait Sith wasn't originally intended to be a spy, but he was taken in that direction. And he and his brothers seemed to like it a lot, so I didn't argue."

Bugs, though, were hard to remove from a soul. They just existed. He couldn't change Mini.