Really interesting stuff you have got here.
One thing I've been searching for a while now: I own a Galaxy Nexus, which has a XMM6260 modem. Samsung had on their stock ROM a feature in service mode where you can check the power modes of the 3G data connection. Since the Galaxy S2 has the same modem, thus it should be possible to get that feature.
I'm interested in this stuff because my Galaxy Nexus likes to drain like crazy on the 3G network that I use and I suspect that it has to do with the 3G data power modes. 3G+wifi is extremely efficient in power use but 3G+mobile date is al big battery hog.
I hope you post a working link soon, than I can start reading this stuff.