Set yourself up as an _angel investor for iPhone apps_. Like a mini-mini-mini YCombinator.
Based on your experience, you should be very good at evaluating an individual's chances of creating a successful app. Solicit pitches (HN would be a great source) and make 5 small investments of $5k each.
If you make another $25k next month, do another 5 investments. Rinse and repeat.
You probably can't produce 5 apps per month on your own. But you can use those same skills to invest in 5 apps per month. There is greater risk (you could lose all 5 investments) but also greater reward (each investment could in turn become its own $25k-mo company).
Good luck!