"What she doesn't know won't implicate me." That's spoken as a lighter bit of snark, running right along the ilk of all the things he'd usually keep inside his head.
Mentioning the cracks, though, manipulating things - he doesn't look up, but he frowns lightly. He's not supposed to do anything to encourage that, to interfere, but... sometimes it's so minor, so easy. Still. He hasn't completely abandoned those rules, though some doubt in their progenitor has been planted. His focus stays on what he's doing, even as he speaks.
"That's not how it's supposed to work."
Not that he has any idea that discussing his code could quickly turn this conversation south. Not yet, anyway.