Hi @pgasbarro,
Sorry to hear you've been seeing this issue rather frequently. I've just checked the project related to your error (in the future, it's helpful for us to have you provide your project url in addition to any error message) and it should no longer be in this state. The issue you are seeing, while preventing you from accessing your project for a period of time, does not have any implication on the actual storage of the data -- which is safe, just temporarily inaccessible by your project.
This issue has been rather pesky, and we are working on longer-term prevention mechanisms as well as better ways to react more quickly to it. Keep in mind that the service is in early days, which is why we are extremely happy to have so many users excited to tell us what is going well and what isn't!
Thanks for your report, and please report these issues in the community forums if they crop up in the future!