How can I respec my badass rank bonus stats?
The answer is NO, you can't. There is no feature to reset them.
Also i did check and it seems those stats are stored on remote servers and not your local machine, so we can't just tweak a file either. (As best as i could find.)
I emailed Gearbox support with the same question outlining the issues and they responded within 3 hours and reset all badass points. Super easy and no hassles. Good luck!
(My previous post was deleted, but I wanted to respond with a new and improved answer.)