All of that granted, isn't this stuff tested on the ground? I guess vibration from the launch must have cracked the welds or something, but I'd have thought that if this were a concern that the parts would have been tested in a vibration chamber.
I have no idea what went so wrong in this instance though. I am looking forward to reading some sort of report if it ever becomes available. Will be keeping an eye on the NASA Lessons Learned Library (https://llis.nasa.gov/).