WELCOME TO THE CLUB!
Mine broke while flooring it driving at 30mph, very odd time to break. I'm sure the 300+ 1/4 mile passes and lots of wheel hop contributed to my break over time. Mine broke at the CV joint that goes into the diff.
You don't hear about this failure too much, so I chalked it up to a fluke. I took a gamble and bought a used drive shaft for $230 shipped. Been holding fine thus far, I have at least 50-100 passes on this one.
I still haven't broke an axle yet, but I'm planning on it. Trying to source some used axles to send over to DSS preemptively.
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.