Not sure what happened, but the thermostat did not repeat its odd behavior when I turned it back on again, as it shut off normally when it hit the set temperature. I'm happy that it's working, but I remain concerned, since besides costing money and causing discomfort, a malfunctioning thermostat can be a safety issue, so I think I should look at replacing it anyway.

Replacement Links:	Thanks Ant and Acleacius.
Play:	Fruits 2. Anti Zombie Bunker.
Story:	The Decline of ‘Big Soda.’ Thanks Slashdot.
Media:	HeroStorm Ep 5: GazlOWNED. Cyborgasm- Nerds vs. Robots. This guy shows off his driving skills in the office.