[bluesnowmonkey]

Sincere question: how do you leak irreversible schema changes to a subset of accounts? Isn't the point of the leak that you're not confident and might need to reverse it? Or are you willing to let those accounts get hosed?

[tedunangst]

Fix it by hand. If it's ten accounts, that's pretty easy. If it's ten thousand, more of a problem.

When you read irreversible, think "very difficult to reverse and not worth the cost of writing and validating code we don't ever expect to run."