After a half decade of delays and several major issues, including it spinning out of control in space on it's first test flight, and all the issues with literally anything else Boeing touches, I can't see how they talked them into getting in it in the first place.
I'm pretty sure it hasn't had a single fully successfully test flight yet so I'm surprised even NASA allowed it.

They are safe on the space station. They have all the time they need to sort it out. They can even wait for another craft to arrive.