I did a part time MBA program that was designed specifically for working professionals. I found it to be very useful - not necessarily for the class material, but to learn first hand about the other industries that my classmates were working in. I found that this information could be very useful for identifying software opportunities that I wouldn't otherwise think of on my own. Ultimately, whether you go back to school for an MBA or an advanced technical degree, the program will be what you make of it.