Excellent info! When I first saw the thread yesterday my idea was to dig into the wheel speed data but you got there yourself first.
Now, another question, since you have good software for it... how to make a Detroit locker for example. It would require 60 for acceleration and 5 for deceleration of course, but the initial value is a bit of a mystery. Logic says that 60 is always locked and 5 is open (well, as open as it can be) until either acceleration or deceleration occurs but you have the tools to see if that's the case.