Charlie Pap... damn, I'm not going to go look up how to spell his name, you know who I mean, he reportedly "lagered" at room temp under his sink for years with satisfactory results. White Labs San Francisco Lager Yeast reportedly lagers well at "higher" temps, though they don't quite claim to reach room temp range. I've been told that Kolsch Ale yeasts also do well at recreating lagers at warmer temps. I've got my first batch of SF Lager Yeast fermenting now, and the only Kolsch yeast I have is still in the White Labs tube in my fridge. So, I'm not speaking from real personal experience at all, just hearsay.
Worst case scenario for you is that you end up with beer. Maybe not lager, but beer, and an interesting experience/experiment while you're at it, so I say go for it.
I'm planning on boiling up a 10 gallon batch, separating it, and doing a head-to-head comparison of the SF Lager and Kolsch yeasts. Some day after I convince SWMBO to let me get a second fridge to lager in, I'll have to do a head to head between on of those yeasts, and a real lager, but that isn't going to happen any time soon.