The problem is I would both clean the bathroom and continue looking for a job. Smile, pitch in, and quietly get the fuck out of there. Net cost me not much. Net cost to the company 10-30+k depending on how long I stay.
PS: Turnover at the 3-6 month period is the most expensive for a SW company. You just lost all that hiring momentum, wasted all that time getting someone up to speed, damage moral, and they leave before you get any real work out of them all at the same time.
That's a bit of a catch-22, isn't it? "Wow, you hate our company. I'm glad we made you hate us so we could find out." Note: an unnecessary undesirable job.
Not to mention he's not screwing a company, he's leaving a contract under established terms after discovering an incompatibility. When you screw up and get fired, you don't really get to say "I'm glad I screwed up before you had the chance to fire me."
PS: Turnover at the 3-6 month period is the most expensive for a SW company. You just lost all that hiring momentum, wasted all that time getting someone up to speed, damage moral, and they leave before you get any real work out of them all at the same time.