During the same interview, the CTO said something to me like: "You can come in, do your work, and leave at 5pm every day. And that's fine. Or, you know, you can stick around a little longer and help take this company to the next level. That's great, too."
As soon as I got home, I googled the company a little more deeply and found a slew of developers complaining on Glassdoor about being pressured to work long hours and come into the office on weekends.
My read on the situation was that the wife had been waiting in the car out in the parking lot for an hour or two (I remember we wasted a half-hour on a whiteboard puzzle-solving exercise which, while kinda fun, didn't really seem that relevant to the position) and was beyond getting sick of this shit.
I imagined him pitching it to her like, "Hey, once we hire another dev, I can start getting out of the office at 5 every day like I promised," when in reality the two (interviewer and new dev) would just guilt each other (or maybe inspire each other!) into working even longer hours.