Really? Are you in the Bay Area? If so, I find it hard to believe there’s not at least one startup within 10 miles of your current employer doing something at least vaguely interesting (or, at least more interesting than selling ads).
Like, for me; I'd be so happy to take a 20% (hourly) pay cut and work half-time for 40% of my current total pay and go to school the rest of the time. But as far as I can tell, the hourly paycut would be more like 50+% just on the hourly, so I'd be looking at like a quarter the total comp, and the prestige cut (and thus hit to future earnings) would be huge, as I'd have to go work for a startup/small company.
I guess this will make more sense if marginal tax rates go back up.