I own a fitbit, and have loved it. I don't regret paying the $99 for it. I log into the web site, and see my daily totals, and the little graph showing when my activity spikes were. At the end of a grueling day walking around New York City, I can tell my wife that we took 20,000 steps and that's a bit interesting. It's useful and interesting - only to a point.
So after reading this post, my main question is "Why?"
Why do you need minute-by-minute access to pedometer data? What use is it, really? The OP says, basically, "out of curiosity". OK, so hack the thing. There's a number of links for intercepting that data during the sync process. But can you fault fitbit for not providing data that noone (not even the company itself) needs?
What data can the fitbit give you on a minute-by-minute basis that is remotely useful or interesting?
It's just a pedometer. At the end of the day, it tells you you took 10,000 steps or whatever. It's also interesting that you walked 50 miles this month, or have walked up steps to the level of a helicopter flies. Or how many miles you've walked this year.
But minute-by-minute?