Your starter just wasn't nearly big enough. Assuming about 10lbs of pilsner malt at 1.05 OG, you would have needed a 7 liter starter with about 3 1/2 bups of DME if you wanted it to take off like an ale fermentation.
You should have pitched the yeast in the starter at your fermentation temp, and let it sit about 24-48 hours before pitching it.
From there, your lager would have looked more like an ale fermentation.
With your small starter, you are just going to have to wait for the yeast to propogate to a much larger population, which is going to take several days. Just be patient with it. The yeast are working, just very slowly.