At room temp it'll start way faster...as you've seen. You may want to plan for a Diacetyl rest since it started warm. Warm starts let the yeast make more of the 'off-flavors' and doing a D-rest will allow the yeast to clean it up better (there's a bunch of threads on D-rests). If possible, make a big starter next time, you need a LOT of yeast for lagers (about twice as much as ales).
Early brewers were primarily women, mostly because it was deemed a woman's job. Mesopotamian men, of some 3,800 years ago, were obviously complete assclowns and had yet to realize the pleasure of brewing beer.
- Beer Advocate